put it in water
put in water with some ice for a few minutes, and you can also do this with lettuce!
If you place a stock of celery into a glass of water it will absorb some of the water and become stiff again because celery is mostly water and when it gets older the water starts to leave the stock and it wilts
how do you make the withered celery stalk firm and crunchy in just short period of time
osmosis
To revive a shriveled pepper and make it fresh and crisp again, you can soak it in a bowl of ice water for about 30 minutes. This will help rehydrate the pepper and restore its crispness.
To revive wilted Swiss chard, you can place it in a bowl of ice water for about 10-15 minutes. This will help to crisp up the leaves and make them fresh again.
Celery is tough to chew and break up primarily due to its high cellulose content, which is a structural component of plant cell walls. The long, fibrous strands of cellulose give celery its crisp texture but also make it more challenging to bite through. Additionally, the tightly packed fibers require more effort to break down compared to softer vegetables. This toughness is part of what makes celery a crunchy and satisfying snack, but it can also make it difficult to chew.
Broccoli Onion Potatoes Cucumber Celery Lettuce Turnip
My method is to reheat them in the oven at about 175-190 degrees to remove the moisture, for about 15-20 minutes. It makes them crisp again. Older ones will just taste bad and need to be discarded.
Celery
True
Eel