Chipotle in adobo sauce is smoked jalapeños chile peppers marinated in a garlicky tomato sauce. Look for small jars or cans in the international aisle of your grocery store. Freeze leftovers in plastic sandwich bags. For less heat, remove the seeds or reduce the amount of chipotle. You can save significantly by buying whole shrimp. Remove the shells and veins under cold running water before cooking. Or to save time and fuss, purchase cooked shelled shrimp.