diff --git a/Spigot-Server-Patches/Cache-burn-durations.patch b/Spigot-Server-Patches/Cache-burn-durations.patch
new file mode 100644
index 0000000000..e938bf64f2
--- /dev/null
+++ b/Spigot-Server-Patches/Cache-burn-durations.patch
@@ -0,0 +1,63 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: lukas <lukasalt98@gmail.com>
+Date: Sun, 27 Dec 2020 16:47:00 +0100
+Subject: [PATCH] Cache burn durations
+
+
+diff --git a/src/main/java/net/minecraft/server/TileEntityFurnace.java b/src/main/java/net/minecraft/server/TileEntityFurnace.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/TileEntityFurnace.java
++++ b/src/main/java/net/minecraft/server/TileEntityFurnace.java
+@@ -0,0 +0,0 @@
+ package net.minecraft.server;
+ 
++import com.google.common.collect.ImmutableMap;
+ import com.google.common.collect.Lists;
+ import com.google.common.collect.Maps;
+ import it.unimi.dsi.fastutil.objects.Object2IntMap.Entry;
+@@ -0,0 +0,0 @@ public abstract class TileEntityFurnace extends TileEntityContainer implements I
+         this.c = recipes;
+     }
+ 
++    private static Map<Item, Integer> cachedBurnDurations = null; // Paper - cache burn durations
++
++    public static Map<Item, Integer> getBurnDurations() { return f(); } // Paper - OBFHELPER
+     public static Map<Item, Integer> f() {
++        // Paper start - cache burn durations
++        if(cachedBurnDurations != null) {
++            return cachedBurnDurations;
++        }
++        // Paper end
+         Map<Item, Integer> map = Maps.newLinkedHashMap();
+ 
+         a(map, (IMaterial) Items.LAVA_BUCKET, 20000);
+@@ -0,0 +0,0 @@ public abstract class TileEntityFurnace extends TileEntityContainer implements I
+         a(map, (IMaterial) Blocks.FLETCHING_TABLE, 300);
+         a(map, (IMaterial) Blocks.SMITHING_TABLE, 300);
+         a(map, (IMaterial) Blocks.COMPOSTER, 300);
+-        return map;
++        // Paper start - cache burn durations
++        cachedBurnDurations = ImmutableMap.copyOf(map);
++        return cachedBurnDurations;
++        // Paper end
+     }
+ 
+     // CraftBukkit start - add fields and methods
+@@ -0,0 +0,0 @@ public abstract class TileEntityFurnace extends TileEntityContainer implements I
+         } else {
+             Item item = itemstack.getItem();
+ 
+-            return (Integer) f().getOrDefault(item, 0);
++            return getBurnDurations().getOrDefault(item, 0); // Paper - cache burn durations
+         }
+     }
+ 
+@@ -0,0 +0,0 @@ public abstract class TileEntityFurnace extends TileEntityContainer implements I
+     }
+ 
+     public static boolean isFuel(ItemStack itemstack) {
+-        return f().containsKey(itemstack.getItem());
++        return getBurnDurations().containsKey(itemstack.getItem()); // Paper - cache burn durations
+     }
+ 
+     @Override