diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 23b13f1f755..467886b25c2 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -57,7 +57,6 @@ import {
   getModifierPoolForType,
   getPartyLuckValue,
   ModifierPoolType,
-  PokemonHeldItemModifierType,
 } from "#app/modifier/modifier-type";
 import AbilityBar from "#app/ui/ability-bar";
 import {
diff --git a/src/data/abilities/ability.ts b/src/data/abilities/ability.ts
index 203a662767a..4bf6ce34762 100644
--- a/src/data/abilities/ability.ts
+++ b/src/data/abilities/ability.ts
@@ -88,8 +88,9 @@ import type { BattlerIndex } from "#app/battle";
 import type Move from "#app/data/moves/move";
 import type { ArenaTrapTag, SuppressAbilitiesTag } from "#app/data/arena-tag";
 import { noAbilityTypeOverrideMoves } from "../moves/invalid-moves";
-import { HeldItemId } from "#enums/held-item-id";
+import { HeldItemCategoryId, HeldItemId, isItemInCategory } from "#enums/held-item-id";
 import { allHeldItems } from "#app/items/all-held-items";
+import { berryTypeToHeldItem } from "#app/items/held-items/berry";
 
 export class BlockRecoilDamageAttr extends AbAttr {
   constructor() {
@@ -5432,10 +5433,14 @@ export class PostTurnRestoreBerryAbAttr extends PostTurnAbAttr {
   override canApplyPostTurn(pokemon: Pokemon, _passive: boolean, _simulated: boolean, _args: any[]): boolean {
     // Ensure we have at least 1 recoverable berry (at least 1 berry in berriesEaten is not capped)
     const cappedBerries = new Set(
-      globalScene
-        .getModifiers(BerryModifier, pokemon.isPlayer())
-        .filter(bm => bm.pokemonId === pokemon.id && bm.getCountUnderMax() < 1)
-        .map(bm => bm.berryType),
+      pokemon
+        .getHeldItems()
+        .filter(
+          bm =>
+            isItemInCategory(bm, HeldItemCategoryId.BERRY) &&
+            pokemon.heldItemManager.getStack(bm) < allHeldItems[bm].maxStackCount,
+        )
+        .map(bm => allHeldItems[bm].berryType),
     );
 
     this.berriesUnderCap = pokemon.battleData.berriesEaten.filter(bt => !cappedBerries.has(bt));
@@ -5465,30 +5470,15 @@ export class PostTurnRestoreBerryAbAttr extends PostTurnAbAttr {
     const randomIdx = randSeedInt(this.berriesUnderCap.length);
     const chosenBerryType = this.berriesUnderCap[randomIdx];
     pokemon.battleData.berriesEaten.splice(randomIdx, 1); // Remove berry from memory
-    const chosenBerry = new BerryModifierType(chosenBerryType);
+    const chosenBerry = berryTypeToHeldItem[chosenBerryType];
 
-    // Add the randomly chosen berry or update the existing one
-    const berryModifier = globalScene.findModifier(
-      m => m instanceof BerryModifier && m.berryType === chosenBerryType && m.pokemonId === pokemon.id,
-      pokemon.isPlayer(),
-    ) as BerryModifier | undefined;
-
-    if (berryModifier) {
-      berryModifier.stackCount++;
-    } else {
-      const newBerry = new BerryModifier(chosenBerry, pokemon.id, chosenBerryType, 1);
-      if (pokemon.isPlayer()) {
-        globalScene.addModifier(newBerry);
-      } else {
-        globalScene.addEnemyModifier(newBerry);
-      }
-    }
+    pokemon.heldItemManager.add(chosenBerry);
 
     globalScene.updateModifiers(pokemon.isPlayer());
     globalScene.phaseManager.queueMessage(
       i18next.t("abilityTriggers:postTurnLootCreateEatenBerry", {
         pokemonNameWithAffix: getPokemonNameWithAffix(pokemon),
-        berryName: chosenBerry.name,
+        berryName: allHeldItems[chosenBerry].name,
       }),
     );
     return true;
@@ -5537,8 +5527,7 @@ export class RepeatBerryNextTurnAbAttr extends PostTurnAbAttr {
     // This doesn't count as "eating" a berry (for unnerve/stuff cheeks/unburden) as no item is consumed.
     for (const berryType of pokemon.summonData.berriesEatenLast) {
       getBerryEffectFunc(berryType)(pokemon);
-      const bMod = new BerryModifier(new BerryModifierType(berryType), pokemon.id, berryType, 1);
-      globalScene.eventTarget.dispatchEvent(new BerryUsedEvent(bMod)); // trigger message
+      globalScene.eventTarget.dispatchEvent(new BerryUsedEvent(pokemon, berryType)); // trigger message
     }
 
     // uncomment to make cheek pouch work with cud chew
diff --git a/src/enums/held-item-id.ts b/src/enums/held-item-id.ts
index cff6151ada7..9991e0fe15a 100644
--- a/src/enums/held-item-id.ts
+++ b/src/enums/held-item-id.ts
@@ -87,7 +87,7 @@ export const HeldItemId = {
   MACHO_BRACE: 0x0909,
 
   // Evo trackers
-  GIMMIGHOUL_EVO_TRACKER: 0x0a01,
+  GIMMIGHOUL_EVO_TRACKER: 0x0A01,
 };
 
 export type HeldItemId = (typeof HeldItemId)[keyof typeof HeldItemId];
@@ -102,4 +102,28 @@ export const HeldItemNames: Record<HeldItemValue, HeldItemName> = Object.entries
     return acc;
   },
   {} as Record<HeldItemValue, HeldItemName>
-);
\ No newline at end of file
+);
+
+
+export const HeldItemCategoryId = {
+  NONE: 0x0000,
+  BERRY: 0x0100,
+  CONSUMABLE: 0x0200,
+  TYPE_ATTACK_BOOSTER: 0x0300,
+  STAT_BOOSTER: 0x0400,
+  CRIT_BOOSTER: 0x0500,
+  GAIN_INCREASE: 0x0600,
+  UNIQUE: 0x0700,
+  BASE_STAT_BOOST: 0x0900,
+  EVO_TRACKER: 0x0A00,
+};
+
+export type HeldItemCategoryId = (typeof HeldItemCategoryId)[keyof typeof HeldItemCategoryId];
+
+function getHeldItemCategory(itemId: HeldItemId): HeldItemCategoryId {
+  return itemId & 0xFF00;
+}
+
+export function isItemInCategory(itemId: HeldItemId, category: HeldItemCategoryId): boolean {
+  return getHeldItemCategory(itemId) === category;
+}
\ No newline at end of file
diff --git a/src/events/battle-scene.ts b/src/events/battle-scene.ts
index 83d260bd7d2..7e454d813e2 100644
--- a/src/events/battle-scene.ts
+++ b/src/events/battle-scene.ts
@@ -1,5 +1,6 @@
+import type Pokemon from "#app/field/pokemon";
+import type { BerryType } from "#enums/berry-type";
 import type Move from "../data/moves/move";
-import type { BerryModifier } from "../modifier/modifier";
 
 /** Alias for all {@linkcode BattleScene} events */
 export enum BattleSceneEventType {
@@ -81,12 +82,13 @@ export class MoveUsedEvent extends Event {
  * @extends Event
  */
 export class BerryUsedEvent extends Event {
-  /** The {@linkcode BerryModifier} being used */
-  public berryModifier: BerryModifier;
-  constructor(berry: BerryModifier) {
+  /** The {@linkcode BerryType} being used */
+  public pokemon: Pokemon;
+  public berryType: BerryType;
+  constructor(pokemon: Pokemon, berryType: BerryType) {
     super(BattleSceneEventType.BERRY_USED);
-
-    this.berryModifier = berry;
+    this.pokemon = pokemon;
+    this.berryType = berryType;
   }
 }
 
diff --git a/src/items/all-held-items.ts b/src/items/all-held-items.ts
index fab4c4bb5cc..5cbc2a8e344 100644
--- a/src/items/all-held-items.ts
+++ b/src/items/all-held-items.ts
@@ -153,11 +153,7 @@ export function initHeldItems() {
     .unstealable()
     .untransferable()
     .unsuppressable();
-  allHeldItems[HeldItemId.OLD_GATEAU] = new BaseStatFlatHeldItem(HeldItemId.OLD_GATEAU, 1, [
-    Stat.HP,
-    Stat.ATK,
-    Stat.DEF,
-  ])
+  allHeldItems[HeldItemId.OLD_GATEAU] = new BaseStatFlatHeldItem(HeldItemId.OLD_GATEAU, 1)
     .unstealable()
     .untransferable()
     .unsuppressable();
diff --git a/src/items/held-items/berry.ts b/src/items/held-items/berry.ts
index eb6da1092bd..e3f6dfd0962 100644
--- a/src/items/held-items/berry.ts
+++ b/src/items/held-items/berry.ts
@@ -1,4 +1,5 @@
 import { getBerryEffectDescription, getBerryEffectFunc, getBerryName } from "#app/data/berry";
+import { BerryUsedEvent } from "#app/events/battle-scene";
 import type Pokemon from "#app/field/pokemon";
 import { globalScene } from "#app/global-scene";
 import { ConsumableHeldItem, ITEM_EFFECT } from "#app/items/held-item";
@@ -26,10 +27,8 @@ export const berryTypeToHeldItem: BerryTypeToHeldItemMap = {
 };
 
 export interface BERRY_PARAMS {
-  /** The pokemon with the item */
+  /** The pokemon with the berry */
   pokemon: Pokemon;
-  /** Whether the move was used by a player pokemon */
-  isPlayer: boolean;
 }
 
 // TODO: Maybe split up into subclasses?
@@ -72,7 +71,6 @@ export class BerryHeldItem extends ConsumableHeldItem {
    */
   apply(params: BERRY_PARAMS): boolean {
     const pokemon = params.pokemon;
-    const isPlayer = params.isPlayer;
 
     const preserve = new BooleanHolder(false);
     globalScene.applyModifiers(PreserveBerryModifier, pokemon.isPlayer(), pokemon, preserve);
@@ -80,20 +78,15 @@ export class BerryHeldItem extends ConsumableHeldItem {
 
     // munch the berry and trigger unburden-like effects
     getBerryEffectFunc(this.berryType)(pokemon);
-    this.consume(pokemon, isPlayer, consumed);
+    this.consume(pokemon, pokemon.isPlayer(), consumed);
 
     // TODO: Update this method to work with held items
     // Update berry eaten trackers for Belch, Harvest, Cud Chew, etc.
     // Don't recover it if we proc berry pouch (no item duplication)
     pokemon.recordEatenBerry(this.berryType, consumed);
 
+    globalScene.eventTarget.dispatchEvent(new BerryUsedEvent(pokemon, this.berryType));
+
     return true;
   }
-
-  getMaxHeldItemCount(_pokemon: Pokemon): number {
-    if ([BerryType.LUM, BerryType.LEPPA, BerryType.SITRUS, BerryType.ENIGMA].includes(this.berryType)) {
-      return 2;
-    }
-    return 3;
-  }
 }
diff --git a/src/phases/berry-phase.ts b/src/phases/berry-phase.ts
index 6e40e299e7c..3d9e87e3dda 100644
--- a/src/phases/berry-phase.ts
+++ b/src/phases/berry-phase.ts
@@ -5,14 +5,15 @@ import {
   RepeatBerryNextTurnAbAttr,
 } from "#app/data/abilities/ability";
 import { CommonAnim } from "#app/data/battle-anims";
-import { BerryUsedEvent } from "#app/events/battle-scene";
 import { getPokemonNameWithAffix } from "#app/messages";
-import { BerryModifier } from "#app/modifier/modifier";
 import i18next from "i18next";
 import { BooleanHolder } from "#app/utils/common";
 import { FieldPhase } from "./field-phase";
 import { globalScene } from "#app/global-scene";
 import type Pokemon from "#app/field/pokemon";
+import { allHeldItems, applyHeldItems } from "#app/items/all-held-items";
+import { ITEM_EFFECT } from "#app/items/held-item";
+import { HeldItemCategoryId, isItemInCategory } from "#enums/held-item-id";
 
 /**
  * The phase after attacks where the pokemon eat berries.
@@ -36,10 +37,10 @@ export class BerryPhase extends FieldPhase {
    * @param pokemon - The {@linkcode Pokemon} to check
    */
   eatBerries(pokemon: Pokemon): void {
-    const hasUsableBerry = !!globalScene.findModifier(
-      m => m instanceof BerryModifier && m.shouldApply(pokemon),
-      pokemon.isPlayer(),
-    );
+    const hasUsableBerry = pokemon.getHeldItems().some(m => {
+      //TODO: This is bugged, must fix the .shouldApply() function
+      isItemInCategory(m, HeldItemCategoryId.BERRY) && allHeldItems[m].shouldApply(pokemon);
+    });
 
     if (!hasUsableBerry) {
       return;
@@ -64,14 +65,7 @@ export class BerryPhase extends FieldPhase {
       CommonAnim.USE_ITEM,
     );
 
-    for (const berryModifier of globalScene.applyModifiers(BerryModifier, pokemon.isPlayer(), pokemon)) {
-      // No need to track berries being eaten; already done inside applyModifiers
-      if (berryModifier.consumed) {
-        berryModifier.consumed = false;
-        pokemon.loseHeldItem(berryModifier);
-      }
-      globalScene.eventTarget.dispatchEvent(new BerryUsedEvent(berryModifier));
-    }
+    applyHeldItems(ITEM_EFFECT.BERRY, { pokemon: pokemon });
     globalScene.updateModifiers(pokemon.isPlayer());
 
     // AbilityId.CHEEK_POUCH only works once per round of nom noms
diff --git a/src/ui/battle-flyout.ts b/src/ui/battle-flyout.ts
index 9a2180eccee..7356666e6c5 100644
--- a/src/ui/battle-flyout.ts
+++ b/src/ui/battle-flyout.ts
@@ -177,8 +177,8 @@ export default class BattleFlyout extends Phaser.GameObjects.Container {
     const berryUsedEvent = event as BerryUsedEvent;
     if (
       !berryUsedEvent ||
-      berryUsedEvent.berryModifier.pokemonId !== this.pokemon?.id ||
-      berryUsedEvent.berryModifier.berryType !== BerryType.LEPPA
+      berryUsedEvent.pokemon.id !== this.pokemon?.id ||
+      berryUsedEvent.berryType !== BerryType.LEPPA
     ) {
       // We only care about Leppa berries
       return;