Mind-blowing Cauliflower Soup

grape seed oil ((or olive oil))

minced garlic ((2 cloves))

sliced leeks (white parts only) ((or diced yellow onion))

teaspoon  Celtic sea salt, (plus more to taste)

large head cauliflower, (roughly chopped)

vegetable broth

blanched slivered almonds ((or raw unsalted cashews))

chopped chives, (to serve)