María A. Alvarado-Gómez of Erie, Pennsylvania, writes: I came to the United States as an exchange student, after spending the first 18 years of my life in Mérida, Yucatán. On school vacations I would go home and cook with my mother and sisters so that I wouldn't lose my touch. My mother was a skilled cook, and I was lucky to have learned at her side. Her food was so popular in our neighborhood that she sold portions of our daily meals to other families. With nine well-fed kids, she said we were her best advertisement. I still take great pride in the food of my homeland. Yucatecan cuisine is known for its Mayan influence, and the essential ingredients we use — limes, spices, avocados, tomatoes, peppers — make for wonderful flavors. Now that ground spices are readily available and vegetables can be quickly chopped in a food processor, preparing traditional Mexican dishes is easier than ever. Fresh and lively, like a cooked ceviche.