Margaritas (3 Kinds)

Motivation
Here are there margarita recipes.  The first is mine, the second and third have been developed by a friend who has put considerable research into them.

Bill's Margarita
Ingredients
2 parts Tequila
2 parts Lime Juice
1 splash of Something Sweet
1 pinch Sea Salt

Method
For the something sweet I'll often muddle up some seasonal fruit (raspberries, blackberries, blueberries, etc) into the glass and serve it will all the little fruit chunks floating in it.  Otherwise agave syrup works well or even a bit of honey in a pinch.  These a suppose to be very tart.  Mix ingredients and serve on the rocks with a bit of sea salt sprinkled on the top.

Cadillac Margarita
Ingredients
2 parts Gold Tequila
1 part Lime Juice
1 part Grand Mariner

Method
Mix ingredients and serve on ice.

Silver Coin Margarita
Ingredients
2 parts White Tequila
1 part Lime Juice
1 part Cointreau


Method
Mix ingredients and serve on ice.