It's almost barbecue season, and that means it's time to prepare delicious meat and fish marinades that will keep your proteins moist and flavorful. Mustard makes a surprisingly tasty and tangy addition, so try it in this easy recipe: In a bowl, crush 1 garlic clove and add 1 1/4 cup olive oil. Stir well. Add 1 heaping spoonful of mustard, season with salt and pepper, and stir again until ingredients are mixed well. Add fresh herbs of your choice: thyme, rosemary, oregano, etc. Pour the mixture over your meat or fish, then let marinate for at least an hour before grilling.