Stuffed Jalapeños

Name: Stuffed Jalapeños
Ingredients: 1 small garlic clove; Kosher salt; 12 ounces cream cheese, softened; 2 scallions, minced; 1 large egg yolk; 1/2 teaspoon ground cumin; 1/2 teaspoon Dijon mustard; 1/3 cup minced cilantro, plus more for garnish; Pepper; 6 ounces sharp cheddar cheese, coarsely grated (1 3/4 cups); 12 large jalapeños—halved lengthwise and seeded, stems left intact; 1 tablespoon extra-virgin olive oil; Lime wedges, for serving