--- ../src-base/minecraft/net/minecraftforge/fluids/BlockFluidClassic.java
+++ ../src-work/minecraft/net/minecraftforge/fluids/BlockFluidClassic.java
@@ -133,9 +133,21 @@
             world.setBlockMetadataWithNotify(x, y, z, 0, 2);
         }
 
+        // Cauldron start
+        org.bukkit.Server server = world.getServer();
+        org.bukkit.World bworld = world.getWorld();
+        org.bukkit.block.Block source = bworld == null ? null : bworld.getBlockAt(x, y, z);
+        // Cauldron end
+
         // Flow vertically if possible
         if (canDisplace(world, x, y + densityDir, z))
         {
+            // Cauldron start
+            org.bukkit.block.BlockFace face = densityDir < 0 ? org.bukkit.block.BlockFace.DOWN : org.bukkit.block.BlockFace.UP;
+            org.bukkit.event.block.BlockFromToEvent event = new org.bukkit.event.block.BlockFromToEvent(source, face);
+            if (server != null) server.getPluginManager().callEvent(event);
+            if (event.isCancelled()) return;
+            // Cauldron end
             flowIntoBlock(world, x, y + densityDir, z, 1);
             return;
         }
@@ -155,10 +167,38 @@
             }
             boolean flowTo[] = getOptimalFlowDirections(world, x, y, z);
 
-            if (flowTo[0]) flowIntoBlock(world, x - 1, y, z,     flowMeta);
+            // Cauldron start
+            /*if (flowTo[0]) flowIntoBlock(world, x - 1, y, z,     flowMeta);
             if (flowTo[1]) flowIntoBlock(world, x + 1, y, z,     flowMeta);
             if (flowTo[2]) flowIntoBlock(world, x,     y, z - 1, flowMeta);
-            if (flowTo[3]) flowIntoBlock(world, x,     y, z + 1, flowMeta);
+            if (flowTo[3]) flowIntoBlock(world, x,     y, z + 1, flowMeta);*/
+            org.bukkit.block.BlockFace[] faces = new org.bukkit.block.BlockFace[] { org.bukkit.block.BlockFace.NORTH, org.bukkit.block.BlockFace.SOUTH,
+                    org.bukkit.block.BlockFace.EAST, org.bukkit.block.BlockFace.WEST };
+            for (int i = 0; i < 4; i++)
+            {
+                if (flowTo[i])
+                {
+                    org.bukkit.event.block.BlockFromToEvent event = new org.bukkit.event.block.BlockFromToEvent(source, faces[i]);
+                    if (server != null) server.getPluginManager().callEvent(event);
+                    if (event.isCancelled()) continue;
+                    switch (i)
+                    {
+                        case 0:
+                            flowIntoBlock(world, x - 1, y, z, flowMeta);
+                            break;
+                        case 1:
+                            flowIntoBlock(world, x + 1, y, z, flowMeta);
+                            break;
+                        case 2:
+                            flowIntoBlock(world, x, y, z - 1, flowMeta);
+                            break;
+                        case 3:
+                            flowIntoBlock(world, x, y, z + 1, flowMeta);
+                            break;
+                    }
+                }
+            }
+            // Cauldron end
         }
     }