If you can't get Mexican crema, you can use sour cream or creme fraiche as an alternative. You could also use regular cream plus a squeeze of lemon juice. These are often not quite as rich and creamy as crema, so you may want to add a little less then replace up to ¼ of the total amount some cream cheese to get a similar, creamy texture.
Calories: 416kcal | Carbohydrates: 53g | Protein: 13g | Fat: 17g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.1g | Cholesterol: 55mg | Sodium: 607mg | Potassium: 368mg | Fiber: 4g | Sugar: 6g | Vitamin A: 1040IU | Vitamin C: 97mg | Calcium: 210mg | Iron: 1mg