We always are looking to try new ingredients on our sandwiches, and for a while we have been thinking of ways to use melon. Melon can provide a little sweetness and also a little bit of crunch (Depending on the ripeness of the melon of course). It’s fresh, so we added it to smoked salmon to really enhance the sense of ‘freshness’ one wants from fish. The mascarpone-pesto was really a way to ‘water down’ the pesto to not overwhelm the rest of the sandwich, yet provide more depth to the taste experience. We like ‘depth’ in our food, as well as ‘height’ (We are making sandwiches after all).