Soba, Japanese buckwheat noodles, are ideal for salads because they taste particularly great when served cold. Crunchy vegetables are highlighted here, adding lots of crisp, fresh texture. Substitute with any raw vegetables you have on hand, such as cabbage, carrot, fennel, asparagus, broccoli or cauliflower. The spicy peanut sauce is very adaptable: If you don’t want to use peanut butter, you can use any nut or seed butter, like cashew, almond, sunflower or even tahini. Both the soba and…