Cut the melon in half and use a spoon to remove seeds. Use a mellon baller to scoop out balls of melon flesh. Alternately, cut the melon into wedges, peel, then cut into bite-sized pieces.
Gently toss the scallions, sake, chile, cilantro, almonds, and salt. Refrigerate, and let stand for 15 minutes, or, cover and chill for up to a few hours. Just before serving dollop with a bit of salted creme fraiche, and basil leaves.