Prep the ingredients per the instructions above.
Bring a pot of salted water to a boil. Add the celeriac cubes and cook for 15–20 minutes, until very tender when pierced with a fork.
While the celeriac cooks, prepare the herb oil. Blend or finely chop the parsley, rosemary, thyme, and garlic. Stir in olive oil and a pinch of salt. Set aside.
For the lamb: In a small bowl, mix together the minced garlic, chopped rosemary and thyme, olive oil, salt, and pepper. Rub this mixture evenly over both sides of the lamb chops.
Drain the cooked celeriac and return it to the pot. Add olive oil. Mash until smooth, and season with salt and pepper to taste. Cover and keep warm.
Heat a skillet or pan over medium-high heat. Once hot, add the seasoned lamb chops. Sear for 3–4 minutes per side for medium-rare, adjusting for your desired doneness.
Mix the ingredients for cucumber salad in a bowl until combined.
Serve the lamb over mashed celeriac. Drizzle with herb oil generously over the meat and mash. Serve with cucumber salad and kombucha.