Here are the steps for making a delicious vegetarian old cucumber soup:
1) Prepare the ingredients by washing and chopping them into small pieces.
2) Heat oil in a pot or wok over medium heat.
3) Add garlic, ginger, and onion to the pot/wok and stir-fry until fragrant.
4) Add chopped vegetables (old cucumber, carrot, mushroom), along with vegetable broth/chicken-style seasoning/salt & pepper to taste. You can also add some tofu if you prefer extra protein.
5) Bring your soup to boil then reduce heat to low and let it simmer for around 20-30 minutes or until all vegetables have become soft enough to blend/mash/stir-dissolve (depends on personal preference).
6) Once done cooking,you can optionally blend/mash/dissolve using an immersion blender/hand masher/whisk. Season with salt and pepper to taste.
7) Serve hot with optional garnish such as chopped cilantro or green onions.