you just answered your own question because they are dry so you are rehydrating them meaning your adding water (moisture ) be it from sauces or what ever of liquid you use.
The dried material absorbs water (in the case of the fruit, the water that was originally in them before drying). The added volume causes them to swell.
Dried fruits and vegetables swell during cooking because they take in moisture from the cooking medium, sauce or soup and so on.
they swell because the water and moisture that was removed during drying is being put back, so the water rehydrates the flesh
During this time, they rehydrate themselves and grow larger in size.
Any dry bean when cooked will swell,which increases in size.
I always find that dry beans swell to about twice their dry size so I would say one cup dry = two cups cooked - but this is not a definitive answer (I am just an amateur cook)
All of them! Water is one of the building blocks of life so anything that was ever alive has water. That being said, without knowing the reason for your question, in a slow cook recipe most meat and fresh fruits and vegetables will generate some water. On the other hand, dried foods and those that "swell" when they cook, such as dried beans and rice will absorb water (although they already have a minimal amount of water in them.) Why do you ask?
Because they absorb the water they're in - which makes them swell up.
About 1.6 cups dried wild rice will cook up to 2 cups or so. Wild rice does not swell much, but will be heavier
potatoes don't swell up when cooked.
Good questions. Maybe it's because it's slow-cooked.
3 cans. This is how the conversion works-- See this site (scroll to end): Per this reference, a 15 oz can yields 1.5 cups drained cooked beans. When cooking dry beans, they absorb a LOT of water and swell up. 1 cup dry = 2.5 - 3 cups cooked Per the site, chickpeas are toward the 3X end of the scale. You need to start with at least half a cup, dry. The first time, I would probably start with 2/3 cup to be sure of having enough, and measure the result. Use the extras for something else, or discard. Dry is cheap.
It's by a process known as 'osmosis' Basically, the outer covering of the bean is water permeable, and the 'seed' inside the bean is porous. Water is absorbed through the outer membrane, which swells the 'pulp' of the seed, causing it to swell.
one and one third cup (1 and 1/3 cup) dry garbanzo beans equal approximately 4 cups cooked. See this site (scroll to end): One 15 oz can yields 1.5 cups drained cooked beans. When cooking dry beans, they absorb a LOT of water and swell up. 1 cup dry = 2.5 - 3 cups cooked Per the site, chickpeas are toward the 3X end of the scale. You need to start with at least half a cup, dry. The first time, I would probably start with 2/3 cup to be sure of having enough, and measure the result. Use the extras for something else, or discard. Dry is cheap.