1 tbsp. finely chopped cilantro
1⁄2 tsp. dried oregano
1⁄2 tsp. sugar
2 ripe tomatoes, cored
2 red jalapeños, stemmed
1 clove garlic, smashed, plus 2 cloves, minced
1 tbsp. unsalted butter
1 lb. russet potatoes, peeled
2 tsp. kosher salt
1 tsp. freshly ground black pepper, plus more to taste
1 tsp. ground cumin
1⁄2 cup canola oil
18 corn tortillas
Thinly sliced green cabbage and tomatoes, and crumbled cotija cheese, for serving
Puree cilantro, oregano, sugar, tomatoes, jalapeños, smashed garlic, and 2⁄3cup water in a blender until smooth; set salsa aside. Bring a medium saucepan of salted water to a boil, add potatoes, and cook until tender, about 25 minutes. Drain potatoes and transfer to a large bowl. Add minced garlic, butter, salt, pepper, and cumin, and mash until smooth. Set potato mixture aside.
Heat oil in a 12″ skillet over medium-high heat. Spread 1 heaping tbsp. potato mixture over half of each tortilla, and fold over to form a taco. Working in batches, add tacos to oil and fry, turning once, until golden brown and crisp, about 3 minutes.
Stuff cabbage, tomatoes, and cotija into tacos; drizzle with salsa before serving.