Masala Skillet Scramble

Name: Masala Skillet Scramble
Ingredients: 1 Tbsp. extra-virgin olive oil; 3 Tbsp. unsalted butter, divided; 1 medium red onion, cut into ½ pieces; 1 plum tomato, seeds removed, coarsely chopped; 1 jalapeño, finely chopped; 3 garlic cloves, finely chopped; 1 1½ piece ginger, peeled, finely chopped; 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt; 1 tsp. ground cumin; 8 large eggs, beaten to blend; 2 oz. sharp cheddar, coarsely grated; Flaky sea salt; 1 radish, trimmed, thinly sliced; ½ cup cilantro leaves with tender stems and/or mint leaves; Warm corn tortillas or toasted country-style bread and lime wedges (for serving)