It's not unusual to find a Mexican restaurant that serves a weekend breakfast, but it's a lot harder to find a full-service Mexican restaurant that offers breakfast dishes all day on Saturdays and Sundays. Ismael Martinez, who opened the little cantina in Waldo last summer, has created a generous breakfast menu for the weekend hungry. It includes traditional American morning food: biscuits smothered in thick, peppery cream gravy; pancakes; eggs and bacon; and even that diner classic, the early bird special. But the Mexican dishes draw the most interest: soft flour tortillas wrapped around huevos rancheros, chorizo or 17 other ingredient choices; fat breakfast burritos, stuffed with a choice of fixings, plus the option of a piquant roasted-red-pepper sauce or Martinez' version of ranchero sauce. The build-your-own breakfast quesadillas also are delicious — and muy filling. Martinez doesn't yet have a liquor license, so patrons can't get a mojito with their menudo. Then again, fruit juice is a healthier choice anyway.