Pan Roasted Lemon Fish with Mustard Greens, Cauliflower, and Preserved Meyer Lemon

steps

1. For the cauliflower purée, place all ingredients in a medium pot, making sure to add enough water so cauliflower is just covered by the liquid. Bring to a  boil and then lower to a simmer. Simmer for 45 minutes.
2. While purée is simmering, prepare fish. Heat canola  oil in a large cast iron or heavy pan. Pat fish dry and season with salt and white pepper. Sear fish on one side.
3. Lower to medium heat. Turn fish over and add the butter and thyme to the pan. Gently spoon the butter over the fish until fish is cooked through, about 3−5 minutes. Remove and keep warm until rest of dish is ready.
4. For mustard greens, add oil to same pan and bring to high heat. Wilt the greens slightly and add shallot and butter. Season with salt and remove from the pan.
5. For roasted cauliflower, add oil to same pan and bring to high heat. Add cauliflower and lower to medium heat. Caramelize both sides and remove to a paper towel-lined dish. Season with salt.
6. For the vinaigrette, combine all ingredients, except pepper, lemon, and oil, in a bowl. Allow to macerate for 20 minutes. Whisk in the oil slowly and crack the pepper directly into the vinaigrette.
7. Place the cooked cauliflower purée that’s been simmering in a high-powered blender and blend with just enough of the liquid to form a smooth purée, about ¼ of the amount in the pot, discarding the rest. Adjust seasoning.
8. To plate, place a little of the purée on four plates. Arrange the roasted cauliflower, mustard greens, and lemon fish. Spoon vinaigrette over the fish and vegetables and serve.