peel the cucumber, and split it in half lengthwise
using a spoon, scrape out the seeds
chop into large pieces and blend (on liquefy) until very, very, smooth
chop a few large fronds of fresh dill into ¼ inch long pieces
sprinkle in Kosher salt (adjust to taste - start with a little only)
grind some black pepper into the mixture (adjust to taste - start with only a little)
add in the chopped dill fronds
add ¾ teaspoon of the Xanthan gum
blend only briefly, in short bursts, so you do not liquefy the dill fronds
let the dressing sit for at least an hour in the refrigerator, so the dill has time to release its flavor
note: In both the cucumber lime and cucumber dill recipes it is important that the cucumber be blended until very smooth so the dressing does not have a grainy texture.