I have a suggestion for an alcohol stove that might work well for frying. Very efficient burn, which means long-lasting for a given amount of fuel. And relatively low heat, which would seem desirable for frying.
The stove: ION alcohol stove kit designed by Sgt. Rock and sold by BPL at this link:
I have not yet tried any frying with my ION stove, but was amazed at its performance recenlty when I was testing several alcohol stoves to determine the best set up for different purposes (fast boil v slow boil, fuel efficiency of different stoves w/different pots and windscreens, etc).
For my testing, I used 3/4 oz of denatured alcohol in each stove with the same pot, windscreen, and quantity of water (16 oz). My ION stove must have burned for more than 40 minutes on 3/4 oz of fuel. Forty minutes!!! On 3/4 oz of alcohol!!! In that period of time, the ION barely brought 16 oz of water to a pre-boil although the water did get hot enough to make a cup of hot tea.
I'm certain that the ION will boil water, and do so faster than 40 minutes. But the results I obtained with the set-up I was using really emphasized the stove's efficiency at a relatively low level of heat. For comparision, with the same windscreen & pot set-up, the other stoves all brought 16 oz of H2O to a boil in less than 10 minutes.
All of which suggested to me that the ION's heat output is very low, and very efficient. I believe these results are also shown by testing for one of the reviews here at BPL, and perhaps at the backpacking gear testing website.
Am I wrong, or would 40 minutes of low heat from less than an ounce of alcohol sound like a pretty good combination for frying fish? Haven't tried it myself, but sounds good.
The pot I used was aluminum, which I think diffuses heat better than titanium. For frying fish, I'd likely try a light aluminum plate or pan. Maybe a heat diffuser under the plate/pan, too, something like the scorch buster used with Backpacker's Pantry Outback Oven, which can be seen at https://www.backpackerspantry.com/prodinfo.asp?number=167220.
But then, a cannister stove with a two liter pot of oil would make for a pretty good fish fry, too. Could even have hushpuppies. And should help attract bears, too.