What do I need to do to make my EntityYoshi drop and itemPoo every 10 minutes?

Okay, I got that, now what code do I need to use to have the item dropped every 10 mins?

You can override onUpdate in your entity class. It's called once per tick while your entity exists so just count the ticks that way. When the counter reaches enough ticks spawn an item at his position.

 

Edit: I will demonstrate when I get home if someone else has not already helped. I'm on my phone atm though.

Please could you demonstrate how to do that?

    
int timer;
    int delay = 10 * (20 * 60); //10 mins

    @Override
    public void onUpdate() {
        if(!worldObj.isRemote && timer++ >= delay){
            timer=0;
            this.entityDropItem(new ItemStack(Items.slime_ball), 0);
        }
        super.onUpdate();
    }

Thanks