"They used to sell sugar-free raspberry syrup specifically for mixing in colas"
They still sell sugar free raspberry syrup ... check in the coffee isle, with all the coffee syrups. Or go to www.davincigourmet.com
Oh THANK you! The masochist in me wonders what the peanut butter flavoring would taste like in Sam's Choice :-) I can't afford any of those now, but will ask it for Christmas. Yum!