Have you ever bought a quart of buttermilk and used only half of it? Make your own by mixing 1 cup of milk with 1 Tbsp. of vinegar and letting it stand for 10 minutes. More easy trades: instead of red wine, use pure cranberry juice. Instead of white wine, use white grape juice or apple juice. And skip the pricey fresh herbs―for every 1 Tbsp. of fresh, substitute 1 tsp. of dried.