Place the cauliflower florets in a steamer basket over boiling water and cook until they are very tender, about 10-12 minutes.
Steam the green beans in a separate basket or during the last 5 minutes of the cauliflower cooking time until they are vibrant green and crisp-tender.
Transfer the steamed cauliflower to a blender or food processor along with the ghee, minced garlic, salt, and pepper.
Pulse the cauliflower mixture until it reaches a smooth and creamy consistency, then set aside and keep warm.
Pat the salmon fillet dry with a paper towel and season both sides with sea salt and freshly cracked black pepper.
Heat the olive oil in a non-stick skillet over medium-high heat until shimmering.
Place the salmon in the pan skin-side down and sear for 4 to 5 minutes until the skin is golden and crispy.
Carefully flip the fillet and cook for an additional 3 to 4 minutes until the salmon is opaque and flakes easily with a fork.
Plate the seared salmon alongside the garlic mashed cauliflower and steamed green beans, drizzling the lemon juice over the fish just before serving.