Here's a wonderful little "Sidewalk Crab Cocktail" with a zippy character.

2 cups chopped Roma tomatoes
1/2 cup fresh lime juice
1/4 cup salsa (commercial brand of your choice)
2 tablespoons catsup
1 teaspoon granulated sugar
1 teaspoon hot pepper sauce
1 teaspoon prepared horseradish
Salt and freshly ground pepper to taste
3 medium avocados, peeled and cut into 1/2-inch chunks
1/2 pound cooked Dungeness or other crab meat (very fresh, please!)
1/2 cup finely diced sweet onion
8 cilantro sprigs for garnish

In a blender or food processor, combine the tomatoes, lime juice, salsa, catsup, sugar, hot pepper sauce, and horseradish. Blend to a coarse puree. Adjust seasoning, adding salt and pepper and perhaps more sugar or horseradish to taste (NOTE: can be prepared up to 6 hours ahead and refrigerated until ready to use).

In a bowl, gently toss together the avocados, crab meat and sweet onion, then divide between 8 cocktail glasses. Spoon some of the tomato puree over the top of each and garnish with each with a cilantro sprig and serve.