In the Old Port of Montreal, there is a gelato shop that serves strawberry basil mint ice cream. We've been going there every summer for this unique and outstanding ice cream. I've been making all sorts of mousses lately, and remembered this ice cream, and thought it might make a good mousse. I was not wrong. The amount of sugar used is about right for sweetened berries. If you have unsweetened berries, you may want to add more sugar, depending on your tastes.