For hot soup on demand, roast the ingredients ahead of time and store them in the freezer. When the craving strikes, simply thaw the vegetables, add your stock, and blend to create a hot soup in minutes.
Balancing sweet, spicy, savory, and sour can make this your ultimate Bloody Mary. To balance, taste the mix and decide what is missing. If you want it spicier or sweeter, just add the appropriate ingredient, blend, and taste again.