Whisk or blend together buttermilk & mayonnaise until smooth. Mix in Doxy's Basil Poppy & sugar. Taste. If you'd like it sweeter, mix in 1 more tablespoon of sugar at this point. Set aside.
Place finely shredded cabbage in a bowl and add sliced red bell pepper.
Then add jalapeño.
Give the the Basil Poppy dressing a mix & pour about half of it on the cabbage & peppers. Mix well, adding more dressing as you go. Mix in the remainder of the dressing & chill at least one hour.