I actually worked on this for a very long time. And it's been a guarded secret of mine ever since i perfected it. So consider yourselves lucky.
For the batter:
I did this all by weight not by volume because it was the only way to get it JUST right.
550g beer
50g plain vodka
400g cake flour
16g salt
10g baking soda
Pre batter:
10g Methylcellulose F50 you can buy this online, no you cannot skip it, no it's not bad for you.
500g water.
Bring water to a boil and ad the Methylcellulose, whisk and chill completely. It'll go clear when cool.
Go from pre batter to some more cake flour to beer batter.
Best goddamn fish and chips you'll ever have, i shit you not.
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