Most of the recipes are for 4 persons without a gastric bypass or lap-band.
When you have a lap-band or had a gastric bypass you can only eat HALF or LESS of a full meal, it just won’t fit in since your stomach has the size of an egg [lap-band] or you don’t have a stomach at all [gastric bypass]. It also means that lap-band and gastric bypass persons eat only half the calories…
Clear soups can be consumed instead of your normal glass of water, but watch out… it’s still filling.
Here’s a list of pan sizes and their conversion to cm / ml / liters: PAN-SIZES