Peel the carrots and cut in 4 lengthwise.
Clean and brush the turnip and the radishes and cut in quarters.
Dice the onions.
Melt the butter in large saucepan or Dutch pan and add the onions and cook with no coloration for 2 minutes.
Add ½ cup of water then the carrots. Cover for 4 minutes. Then add the turnips and radishes.
Cover for 2 minutes.
At the last moment add the peas and lettuce leaves, a few drops of lemon juice. Salt and pepper. The water/butter looks like a sauce, a “liaison” for the vegetables.
Grill to your taste the lamb chops. Add the spices, salt and pepper.
In France, we cook them “rosé”, pink but not red inside.
Serve a few tablespoons of jardinière and 3 lamb chops.