In a medium bowl, whisk to combine tahini, soy sauce, sriracha, sugar, rice vinegar, sesame oil, garlic, and ginger. Whisk in 1 to 2 tablespoons water, until sauce reaches desired consistency. (It should be the consistency of pancake batter.)
Optional: whisk in half of a ramen flavor packet, taste, and add more if desired. (Some brands’ flavor packets are saltier than others, so it’s best to start small.)
Boil ramen noodles according to package instructions, then drain and add to bowl with tahini sauce. Add desired vegetables and toss to combine.