A friend of mine is a fridge engineer and has built me a counterflow linear type wort cooler (pics below)
Tested with 10ltrs of boiling water and it works awesomely to bring the temp down to 19°C without messing with flow rate or anything.
My question is, what can I use to clean inside the pipe prior to putting wort through it? I can rig up some kind of brush but would flushing it through with vinegar and letting it sit before thoroughly rinsing work?
Best
Jase

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