My deep fryer compared to the ones that have a burner heating the oil from the bottom is that in short time your oil is no good. Direct heat combine with what ever coatings you put on your fish for an example falls on the bottom and will burn and ruin your oil.
See attached info on how it’s heated.
Like it’s says how people per hour you can feed and I’m sure it’s correct. I can fry approx 40 perch fillets in about 15 mins, 10 lbs of med chicken wings a good 30 mins (80-90 wings). Also I can reuse the oil for many frying occasions. Fish and fries gets the new oil first and after a few meals it’s chicken wings and before it’s drained it’s a feast of deep fried dill pickles. It’s just endless what gets thrown in it
Before we got hit with Covid, we buy a 16 lt jug of canola oil at Costco for $19.00, the last one I bought in the fall was almost $40.00
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