{T}, Discard a card: Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
{4}, {T}, Sacrifice The Underworld Cookbook: Return target creature card from your graveyard to your hand.
The Underworld Cookbook's last ability can target any creature card in your graveyard, not just one discarded with its first ability. For example, if a Granite Gargoyle you control dies after being dealt damage by Lightning Axe, you could use The Underworld Cookbook to make a delicious Gargoyle entrée.