Is it possible? Can you frog brioche? Of course. It’s getting it back on the needle that’s tricky. I’m here to help! I’ve had a lot of experience frogging…(for newbies: frogging means rip-it, rip-it, rip-it).
You can rip one row/round at a time, alternating colors, but it’s just as easy to rip them simultaneously. The trick is to rip until you’re close to where you want to end up, and then tink (un-knit, knit spelled backwards) the last row or round, one stitch at a time, picking up each stitch as it’s freed from the yarn. This is also how I frog regular knitting.
After I made this video, I frogged this project completely, because it’s a little too big. But I wanted to show you how it worked, before completely undoing it. It turned out to be just a big swatch!