I have been using Equate (Walmart's store brand) chocolate protein isolate shake mix since December. I like the price and the taste. I would mix one scoop with 8 oz. fat-free Fairlife milk and ice. I used the blender to mix. It turned out light, foamy and frothy and stayed that way.

It has gone out of stock. Every other brand that I try turns to runny liquid soon after blending, which I don't enjoy as much.

I googled and found no idea. Every link was about making protein shakes less frothy. Any ideas? More ice didn't help.

maybe you could try a shaker bottle to keep it in and keep shaking it between sips? I have no idea if that would work; it's just a thought...

Use a frother, available online.

This is the one I use and love dearly.