Deliver a pot of water to a boil. Add the potatoes and cauliflower and prepare dinner till the potatoes are fork tender, about quarter-hour. Drain the water and put aside.
Because the potatoes and cauliflower prepare dinner, set a carbon metal skillet on medium excessive warmth, as soon as scorching add olive oil and ONE tablespoon of butter. Add the leeks and cabbage and prepare dinner for five to six minutes, permitting them time to wilt.
Add the remaining tablespoon of butter, pour within the almond milk, then add pinches of sea salt & pepper. Combine all the things collectively.
Add the cabbage combine to the drained pot of potatoes and cauliflower and mash all the things collectively. For BEST outcomes and texture, use an immersion blender. Season to style with sea salt & pepper.