Thoroughly wash and peel the potatoes, leaving a strip of skin on each. Boil until tender, and drain in a colander. Put the potatoes back in the pot or in a large bowl.
In a small saute pan, heat the olive oil and add the crushed garlic. Roast until slightly brown. Then add to the pot with the potatoes.
Add butter, almond milk and salt & pepper to taste. Mash the potatoes with a potato masher (or a clean mug).
To prepare the tuna, wash and pat dry with a paper towel. Rub the tuna steaks with a little olive oil, then season with a little sea salt, and a generous amount of black pepper on each side. It's best to use freshly ground black pepper. If you have your own grinder, use the coarse setting.
Add olive oil to a hot cast iron skillet, then add the tuna steaks. Sear for about two minutes, then flip and sear the other side*
Serve Pepper Tuna Steaks and Rosted Garlic Mashed Potatoes with Sauteed Spinach or vegetable of your choice.