The Sichuan province in the southwestern corner of China is known for its fiery dishes. Here, the richness of tahini tempers the spicy chile paste in this cup-of-noodles-style mason jar soup recipe. You can grind the Sichuan peppercorns in a spice grinder or mortar and pestle, or crush them with the bottom of a heavy skillet.
Green tea soba noodles, or cha soba, are buckwheat noodles made with powdered green tea, which imparts a subtle grassy note and pretty color. You can find them in Japanese markets or online. Regular buckwheat soba noodles work just as well in this cup-of-noodles-style mason jar noodle soup.