Half of my extended family are vegetarian and many soups and sauces call for vegetable stock... and shop bought is a) unavailable here and b) stock cubes seem full of salt and preservatives. I make my own vegetable stock and freeze it so that I have plenty on hand when making vegetarian soups, lasagnes etc. I use small handfuls of fresh herbs, throw in what you have to hand and don't be afraid to be generous with the amounts. If you have veggies that need using up like cauliflower, green beans, broccoli etc throw them in too for the extra flavour. Yield depends on the capacity of your pressure cooker. ZWT REGION: The Netherlands.