Get 2 skillets going if you can!
Shiitake: Heat 2 tsp oil oil in a skillet over medium high heat. Cook mushrooms for 2 minutes. Add 1.5 tsp soy, 1/4 tsp sugar, 1/2 tsp of garlic. Stir for 1 minute, then remove.
Carrot: Add 2 tsp oil into the skillet, cook carrot until just tender (5 to 8 minutes), then remove.
Zucchini: Cook as with carrot for 4 minutes.
Spinach: Heat 2 tsp veg with a splash of sesame oil. Saute until starting to wilt. Add 1/2 tsp garlic, and salt to taste, stir, then remove. When cool, squeeze to drain out excess liquid.
Beansprouts: Simmer in water for 5 min or steam in microwave for 3 min until floppy. Drain under cold water, then cool. Squeeze out excess liquid with hands, place in bowl. Mix with 2 tsp sesame oil, 1 tsp garlic, 1/4 tsp fish sauce.
Vegetables can cool, they are meant to be at room temp or slightly warm.