Si Señor History Using an old family Southern New Mexico recipe, Martin and Irene Castillo established their first Si Señor Restaurant in their hometown of Deming, New Mexico in 1984. Martin and Irene together with their three children have opened Si Señor Restaurants in New Mexico and Arizona. The highly successful Si Señor Restaurants have prospered in the most competitive region for arguably the best tasting Mexican Food in the Southwest. The success can be largely attributed to their sumptuous use of Hatch Chile, the impeccable service of their dedicated employees, and of course, their unique Southern New Mexico recipes. Hatch Chile is a high grade, sun dried chile that comes to us from Covarrubia’s Farm in the Hatch Valley along the Rio Grande, sometimes called the “Napa Valley of Chile.” Nowhere else in the country is it possible to grow as high a quality long stem chile. The Southwestern hospitality and the variety of dishes available will draw you to return for more of the appetizing chile cuisine offered seven days a week. Our enthusiastic staff is sure to make your dining experience unique and personal. Recently, Si Señor Restaurant was awarded three Las Cruces Sun News “Best of the Best Reader’s Choice” Awards. These are: “Best Mexican Food,” “Best Chips and Salsa” and “Best Business Lunch Place”.