So, had to get inventive. I own Brewzilla 35L for making beer and cook my grain for whisky. As it is computer controller, you can't use it with a voltage regulator, that would cook the electronics. But, no one said that you can't make it stupid.
So, turn it upside down, unscrew the 3 long screws, that lifts the bottom. Be careful about the board, 3 more short screws to open. On that board, disconnect wires marked as AC-N, AC-IN, L1, L2 and the blue one. Connect AC-IN, L1 and L2 together, connect AC-N and the blue one together. That's it, you have successfully bypassed all electronics. Screw everything back together and enjoy your new "stupid" kettle.
Think next mod would be to install a 3 pos switch, so I can choose whether to use "distillation" mode or "cooking" mode.