To learn more about avocados, please see the February 1998 issue of MARTHA STEWART LIVING. 1. In a blender, combine avocado, cilantro, 3/4 cup chicken stock, serrano or jalape=F1o pepper. Add orange juice, tequila, salt, zest, and remaining chicken stock. Blend until smooth, in two batches if necessary. Strain through a sieve. 2. Cut watermelon in half crosswise and hollow out, forming a tureen. Seed watermelon and cut into 1/2-inch cubes. Pour soup into watermelon and garnish with watermelon cubes, reserving remaining watermelon for another use. Sources: Special thanks to Josefina Howard Proprietor Rosa Mexicano 1063 First Avenue New York, NY 10022 212-753-7407 for reservations. Posted to recipelu-digest by "Valerie Whittle" on Feb 16, 1998