So we didn't actully make the cake for our first Buon Amici Dinner, but we thought it would go really well with raspberry sauce. The easiest way we know to make raspberry sauce is to go to the market and find frozen raspberries packed in sugar... Not lightly packed, but lots of sugar. These used to come in funny little oblong cardboard box looking things with metal tops and bottoms, but seemed to have morphed into plastic tubs these days.  We're not talking about fruit without sugar or fruit with some sugar in bags.

Put the frozen fruit into a blender or small food processor and blend until smooth.

If you can't find the rasperries we're talking about (and, in fact, we couldn't when we were making this dinner), make a "simple syrup" by adding 1 part water to 2 parts sugar, warm in a pot until dissolved, then blend with frozen, unsweetened raspberries.

No matter how you make it, use just enough liquid (add water or simple syrup as needed) so that it will come out really nicely through a mustard/ketchup bottle (when you're doing it for large parties... You'll probably have to snip the top a bit since the seeds get caught).