Here’s another variation of my recipe using slow-roasted tomatoes. After 4 – 5 hours in the oven, the tomatoes become so rich in umami flavors and very soft. So, I like to serve it very simply by topping them over the cold somen noodles and pouring a soy-flavored dashi broth over it. I like breaking the tomatoes with chopsticks and gently mix with the noodles as I eat, or you can coarsely chop the tomatoes before topping over the noodles, too.
The best thing is that both the tomatoes and broth can be prepared up to a few days in advance. So, once I make them for the next days, all I need to do is just boil the somen noodles and assemble them for a quick delicious meal.