Potato Crisp making
I read that 100kg of potato will process 35kg of potato crisp. I have tried it and did not achieve that result. I used 100kg of potato to process only 15kg of potato crisp.Please does blanching have effects on the shrinkage or what should i do to achieve that result? I am new in a small scale manufacturing of potato crisp
Best Answer
35% by weight is extremely optimistic considering that an average potato is 75% water (according to a number of internet sources). If you don't peel the potatoes and they're 100% usable (no bruising, no black spots) really 25% is the best you can hope for in potato weight. Obviously, you want as little of the final weight as possible to be oil, both because oil is more expensive than the potatoes and also for the sake of the quality of the final product.
I don't know how it is done industrially, but homemade crisps (chips) are generally not blanched, just soaked in cold water to remove excess starch, then allowed to dry before frying. You might find this of interest: How to make crispy/dry potato chips/crisps?.
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How a potato crisp is made?
The potatoes are then put into a vat of vegetable oil that always bubbles at 190\xbaC (375\xbaF). As the potato chips cook the water inside them turns to steam. The steam travels upward and the space that the water took up in the potato slice is replaced by the oil, making the potato chip crisp.What makes crisp crispy?
There are a number of techniques to achieve crispiness when cooking. Frying food can make it crispy, such seen in French fries. A breading coating using flour, egg wash, and bread crumbs will provide a layer of crispiness. Baking and roasting impart crispiness, as well, as noted in the skin of Peking duck or pernil.Why are my potato chips not crispy?
In the time it takes for the food to reach the customer's door, the lack of ventilation combined with the heat of the food itself, steams the chips, causing them to go limp and moisture ridden. Packaging can transform perfectly crunchy chips into floppy stems.Homemade Crispy Potato Chips - Potato Crisps
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