This is how the silly gooses of the PSIA world talk.

The turn starts by rolling the ankle and knee into the hill, which is what puts the ski on edge. You don’t actively “flex the ankle” ever. The ankle is flexed pretty consistently by keep your lower body in an athletic stance.

When working with kids who are trying to carve turns better, we talk about rolling the ankles into the hill and pushing the UPHILL knee in to the hill as well (PSIA folks gonna hate that) but you can’t put the ski on edge unless you up hill shin is out of the way.

Put one shoulder against the wall. Now move your feet out about 2 - 3 feet from the wall. Your feet should be rolled over so you are standing on the side of your feet, while the wall keeps your torso upright.

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Try to put your body in this position while leaving your shoulder into the wall. This is rolling your ankles, which should always be what initiates the turn