Yrs ago I used to brew extract on my stove in an enamel covered steel kettle. I don’t recall scorching any beer. Millions of gallons of homebrew have been brewed on a stovetop by a bazillion homebrewers. So I cannot believe stovetop is your issue.
Do you heat water, turn off the stove, stir in the extract, then when well mixed, turn on the stove to boil?
“When the water in the brewpot is boiling, turn off the stove and stir in the malt extract. Be sure the extract is completely dissolved (if your malt extract is the dry variety, make sure there are no clumps; if the extract is syrup, make sure that none is stuck to the bottom of the pot). Next, turn the heat back on and resume the boil. Stir the wort regularly during the boil to be sure that it doesn't scorch.” John Palmer, How to Brew
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