This Italian lemon liqueur is one of my favorite summer sippers....either straight on the rocks or even mixed with a little lemonade etc.

http://cocktails.about.com/od/liqueu...ncello_lqr.htm

I have not tried that many brands...just the Toschi and Petrone..with a nod to the Toschi. Some other brands to try:

http://www.google.com/products?hl=en...&um=1&ie=UTF-8

Any favorites out there? I will be looking for the Pallini