
Just enough olive oil to cover the bottom of a non-stick pan (or double that if using cast iron or polished metal). Temp on HIGH.

Pour in a heap of frozen shreds into smoking oil

Flatten out a bit

Turn temp down to Medium or MedLow
(depending on how long you want them to take) & walk away.
I do Medium if I want to go drink a coffee & read, MedLow if I want to take a shower.
(As soon as you've flattened them, no rush, you can let them sizzle for a bit. I'm just generally wanting my coffee &/or shower, now. The oil cools when you put the frozen things in it, you just don't want it smoking hot, again. So you've got a few minutes. If I haven't started my coffee, I'll let them sizzle while I do that, then turn it down.)

Turn temp up to High & scooch them together (for easier flipping)
once edges are crips & middle is warm
Generally 10-15minutes or so on Med, twice that on MedLow. But it varies a lot depending on how thick the shred heap is 2cm vs 4cm, if you let them sizzle, etc. It's a very relaxed process at my house... As are most things that happen before coffee ;)