+1 on the simple syrup, it makes life a lot easier since the sugar is already dissolved. I make the simple syrup by bringing 1 cup of water to boil then stir in 1 cup of sugar and letting it cool. Also, when you muddle the mint leaves don't go crazy or you'll be spitting out little bits of mint the whole time. Just bruise them enough to get the oils out. This is how I typically make them:
Muddle the mint in the bottom of the shaker (
muddler)
Add the juice from 1 lime (I use a
citrus reamer)
Add 1 oz simple syrup
Add 2 oz white rum (Bacardi)
Fill the shaker with crushed ice
Then fill with soda water (not tonic!)
Pour between two glasses to mix, add more rum to taste
When we were in Vegas earlier this year I had an awesome mojito, I went back to buy another one and watched how he made it, that's where I picked my recipe up from.