I cant override the addInformation method because it is not in the ItemFood class, so is there anyway of doing this?

ItemFood extends Item.

My class already extends ItemFood and i cant extend two classes at a time

The addInformation method doesnt seem to be overriding though. Do you know of any other causes of it not working?

You're not overriding properly. Show your code.

 

package MinespressoMod;

import java.awt.List;

import net.minecraft.client.renderer.texture.IconRegister;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemFood;
import net.minecraft.item.ItemStack;
import net.minecraft.potion.Potion;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class ItemSugaryDrink extends ItemFood {

public ItemSugaryDrink(int par1, int par2, int par3, boolean par4) {
	super(par1, par2, par3, par4);
	setAlwaysEdible();
	setPotionEffect(Potion.moveSpeed.id, 200, 5, 1.0F);
	setCreativeTab(null);
}




public void registerIcons(IconRegister par1IconRegister)
 {
     this.itemIcon = par1IconRegister.registerIcon("Minedrinks:Coffee");
 }

@SideOnly(Side.CLIENT)
public void addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List dataList, boolean par4){
     dataList.add("Extra Sugar");
}

}

You imported the wrong list. Always use @Override if you intend to override, it will help you detect errors like this.

Thanks, sorry to bother you over such a simple problem lol