It could be an Italian Sweet Pepper, Pepperoncini, maybe a Cayenne. Those look similar to yours.

Ok, I also have a mystery pepper that looks very similar to yours. I bought one of those mixed variety hot pepper seed packets (which didn't actually list the different varieties!), and this is one of the peppers it produced. This is actually a second generation pepper planted from seeds I saved from last year, but it looks pretty much identical to what grew last year.

My best guess is that these are Italian long hots. Mine seemed hotter than those are supposed to be, especially when they turned red (more like the strength of a jalapeno), but I know hotness can vary from plant to plant sometimes.

If you do have the same thing as me, the peppers are very tasty when they're red--very sweet and spicy--but good too when they're green.

This is only my second year growing peppers so if anyone out there with more expertise can comment that would be great! There do seem to be a bunch of varieties out there that look very similar to this.

Here's mine:

I have an indistinguishable pepper/pepper plant that I kept seeds from last year as well. I bought it from a local nursery labelled as a Cayenne. I dehydrated a bunch once ripe (red) and ground up into my own pepper powder. It was amazing, as you said sweet and spicy.

Both of those are Cayennes

hmm, hadn't been thinking cayenne just because most pictures I found seem to show cayennes as slimmer. these seemed fatter than a typical cayenne. would they be a certain type of cayenne? or is there just a lot of variation in cayennes?

Or, just came across this--any chance could they be cow-horns? also looks very similar:

http://www.pepperscale.com/cowhorn-pepper/

Looks like the one on this web page

Look alike

pepperquestion, or one of these on this web page?LINK

It looks like either a cowhorn or a type of cayenne. Ristra cayenne are big, so are elephant trunks, and there are many others. When it is ripe and you bite it that should help more. www.chileplants.com has over a 100 varieties with pictures and that may help you more, too.

I was going to say Ristra Cayenne Hybrid as well. Grew em a few years back. Fun to grow, big yield, but heat is less than regular cayenne.

If you are a cayenne fan, ever try the Golden cayenne? Great taste, meatier walls and I think a little hotter than standard cayenne.

Just for reference, when I uploaded the picture it got a little squished in size so the peppers appear a little thicker than they actually are! Thank you for all the comments so far....still trying to figure this mystery out!

I thing Jim's spot on with cowhorn

I agree they are not regular Cayennes for sure.

edit.

I posted this last Summer. The peppers were I think ring of fire. Looked like cayennes but much hotter than your average cayenne.