We don't have any salsa in the house, so I whipped this up to go on our black bean tostadas tonight. It took virtually no time and tasted marvelous.
1 large tomato, diced
2 cloves garlic, minced
1 handful cilantro leaves
1-1/2 tsp lime juice
2 dashes onion powder
Mix all ingredients together and let sit for a few minutes to let flavors mingle.