I worked at a movie theatre 12+ years ago and I had a regular customer who I would make strawberry jalapeno milkshakes for. Vanilla shake base, sliced strawberries a little strawberry juice and probably an ounce of jalapeno juice, from our big bulk cans of sliced jalapenos. Then I'd throw a couple slices on top for him. Made a big 24oz shake. He swore by it, but I'd only make it for him if it was a slow evening because I had to clean the mixer after each time. I never tried it.