- 8 small corn tortillas, approx. 6 in (15 cm), total about 8 oz (225 g) - 8 oz (225 g) quesillo or other very soft, mild fresh cheese (or young mozzarella) - 1/2 cup (120 ml) crema fresca or sour cream - 2 tbsp (30 ml) unsalted butter, melted - 1 medium red onion, thinly sliced - 1/2 cup (120 ml) white vinegar - 1/2 cup (120 ml) water - 1/4 cup (50 g) granulated sugar - 1 tsp (5 g) salt, plus more to taste - 1/4 tsp (1 g) ground black pepper - 1 tbsp (15 ml) vegetable oil or lard for warming tortillas - Lime wedges for serving - Fresh cilantro leaves for garnish (optional)
1. Make quick pickled onions: in a small saucepan combine vinegar, water, sugar, and 1 tsp salt. Warm gently until sugar dissolves. Place thinly sliced red onion in a bowl or jar and pour hot pickling liquid over; let sit at least 15 minutes (longer for a stronger pickle). 2. Prepare the cheese: if quesillo is in a disc or ball, tear or slice into thin strips or pieces so it melts/softens quickly when warmed. Keep at room temperature. 3. Warm tortillas: heat a skillet over medium heat, brush lightly with oil or a little lard. Warm each tortilla 20–30 seconds per side until pliable and slightly charred. Keep warm wrapped in a clean towel. 4. Assemble quesillos: place a warm tortilla on a work surface, add roughly 2 oz (55 g) softened quesillo in the center, fold or roll the tortilla to enclose the cheese. If desired, return the rolled quesillo to the skillet briefly seam-side down and brush with melted butter to warm through and encourage melting. 5. Dress and serve: top each quesillo with a spoonful of crema fresca, a generous portion of pickled onions (drain before using), and a sprinkle of black pepper and cilantro. Serve immediately with lime wedges. 6. To store: keep pickled onions refrigerated up to 1 week and assemble quesillos fresh for best texture and flavor.
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