To make a perfect margarita, you need the proper ingredients. A margarita is prepared by using tequila, lime juice and an orange liqueur. You can add a few other ingredients like salt and a lime for garnish. But, frankly, using those things isn't necessary. The critical ingredients are tequila, lime juice and orange liqueur.Try to buy the highest-quality ingredients that you can afford. If you buy cheap ingredients, you'll definitely taste the difference in your drink. For tequila, buy Sauza Conmemorativo. A 1.75 LTR bottle will cost between $25 and $39, depending upon where you purchase it. Or Patron if that's unavailable. For orange liqueur, buy DeKuyper Triple Sec. At $20 for a 1.75 LTR bottle, it's inexpensive. For lime juice, buy a 25-ounce bottle of Roses for under $4. Finally, buy 4 fresh key limes, a lemon and a can of Sprite. You'll understand why in Step 2. Now that you have the proper margarita ingredients, you're ready for the next step.