Prepare a pot of water with a teaspoon of salt and boil.
Once boiling, add the soba noodles, stirring them into the boiling water.
Reduce the heat to simmer and cook for 5 minutes. Yes, only 5 minutes.
Once cooked, drain the noodles in a colander, and run cold water through the noodles, moving the noodles around in the colander, making sure to cool all the noodles.
Place the cool noodles in a bowl.
In a small bowl or measuring cup, mix the rice vinegar, soy sauce, lime juice, minced garlic, and red pepper flakes.
Whisk together.
Pour the dressing over the noodles and toss into the noodles.
Add the vegetables, mango, and cilantro.
Toss with the noodles.
Garnish with chopped peanuts.