Bell peppers are weird. For one thing, they're technically fruits, not vegetables. That might make sense to all of you botanists out there, but to the rest of us, it's just weird.
And if that weren't weird enough, they're also weirdly shaped and bulbous, with weird, hollow insides. Which wouldn't be a problem if we wanted weird, bulbous slices. But what if we want nice straight slices? In that case, the challenge is turning a round bulbous thing into a nice straight flat thing. Which is exactly what we're going to do here.
Before you begin, make sure you have a cutting board and a sharp knife.
Ready to get started? Place the pepper on its side on the cutting board in front of you and trim off the bottom end.
If you're doing batonnets or any other knife cut that needs to be nice and straight, these ends pieces probably won't do much good, so you can toss them, snack on them or whatever.
Looking down into the interior of the pepper, you can see that there are several ribs that attach the pepper's core to its outer shell or hull. Our objective is to slice through those ribs, thereby detaching the hull in a single piece, while leaving the outer shell intact.
Find a spot anywhere on the edge of the pepper, other than where one of the ribs meets the outer shell, and position the tip of your knife there.
You're going to make a single cut from top to bottom. This step is the tricky part. A sharp knife makes this easier because you'll barely have to apply any pressure at all.
If you're continuing, the idea is to sweep the blade sideways through the ribs. As you do this, the entire pepper should just unfurl itself right there on the cutting board.
If you do this right, the core and all the seeds should come out all in one piece.
You can unroll the pepper so that it sits flat and then trim out those little white membranes.
There, wasn't that easy? Now that you've transformed that weird bulbous thing into a nice straight flat thing, you're ready to slice and dice it any way you like.
taken from https://www.thespruce.com/core-and-seed-a-bell-pepper-
till next time this is Becky Litterer, Becky's Greenhouse, Dougherty Iowa