*Lime bar mix (a.k.a. sour mix, a.k.a margarita mix)
To rim the glass, simply rub a lime around the top of the glass and then invert into a saucer of salt.
Note: Although margarita drink recipes don't differ too much from place to place, there are some subtle differences. Most bars use lime bar mix instead of the Lemon Juice and Rose's Lime Cordial shown in the video. Another, arguably more traditional variation is to make it with real squeezed lime juice and a teaspoon of sugar. You can make it however you like it or with whichever of the above ingredients you happen to have on hand.