Creamy Queso Dip

Ingredients (12)

• 1 tablespoon neutral oil or butter
• 1/2 small onion, finely chopped
• 1 small garlic clove, grated or finely minced
• 1/2 teaspoon ground cumin
• 1/4 teaspoon fine sea salt, plus more to taste
• 1 cup (236 ml) whole milk
• 1 1/2 teaspoons cornstarch
• 6 ounces (170 grams or 1 1/2 cups) cheese, shredded or torn if using slices, suggestions below
• 2 ounces (56 grams) cream cheese, optional, see notes
• 1 (4-ounce) can chopped green chilies, mild or hot
• 2 tablespoons chopped pickled jalapeño, plus 1/2 tablespoon pickle juice, optional
• Chips, for serving