Heat a large braising pot over high heat. Add the oil and the onions, and saute for 2 minutes. Then, add the red peppers and saute 2 minutes more.
Then, add curry powder, and saute until fragrant. Add the garlic, ginger, a little salt and pepper to the saute.
Add the pumpkins, chickpeas, chayote, potatoes, carrots, thyme, and scallions, and stir the saute for about 6 minutes. Add enough vegetable stock to just cover the vegetables. Bring to a simmer, and then add the cauliflower and cover the pot.
Simmer for about 35 minutes. Then add Cheryl's Hot Sauce, salt, and pepper, to taste. Simmer for 5 minutes more.
Cheryl's Hot Sauce:
To a blender, add peppers and 1 cup of vinegar and puree. Add remaining vinegar, if needed. Stir in pimento seeds. Store in a bottle or jar in refrigerator.