Tuscan Kale

My Tuscan kale is going to seed. I have read it gets bitter after it seeds.
Should I- cut off the flower stalks so I can continue to eat the leaves; let it go to seed for the future, or pull it out and buy new plants?
Thanks

It will get bitter after it bolts.  The question is whether you still like the taste of it or not.  You might not get much more of a harvest off of it even if you cut the flowers off though.  In my experience, once a plant bolts, there's no stopping the process. I would vote for letting the best one go to seed and cutting the flowers off the rest if you still like how they taste.  Let some of that seed drop into the bed and save some.  The volunteers that sprout should be well-adapted to your area and make good plants.  You can divide them up once they get big enough and you'll have a whole new crop for free!  You'd also be able to start kale from the seeds you've saved for later use.  Kale is very easy to grow from seed.