public void PourLemonadePitcher(Inventory inventory) { if (inventory.LemonCount > 0 && inventory.IceCount > 0 && inventory.SugarCount > 0 && inventory.CupCount > 9) { inventory.LemonCount -= lemonsPerPitcher; inventory.IceCount -= icePerPitcher; inventory.SugarCount -= sugarPerPitcher; cupsOfLemonadeLeftInPitcher = 10; } else { UserInterface.InvalidPourLemonadeResponse(); } }