How to Make It
In a small saucepan, heat 1/4 cup of the oil. Add the tomato and tomato paste and cook over moderately high heat, stirring, until the tomato is very soft, about 3 minutes. Stir in the tarragon, parsley and lemon slices and simmer over moderate heat for 5 minutes. Add the vinegar and the remaining 1/4 cup of oil, cover and cook over low heat for 15 minutes. Strain the mixture through a fine sieve into a heatproof bowl. Stir in the lemon juice and season with salt and white pepper. Let the vinaigrette cool to room temperature.
Light a grill or preheat a grill pan. Rub the lamb chops with olive oil and season generously with salt and pepper. Grill over moderately high heat until medium-rare, 3 to 4 minutes per side. Transfer the chops to a platter and let rest for 5 minutes. Serve with grilled bread, feta and http://www.foodandwine.com/recipes/agrodolce-caponata" title="Agrodolce Caponata">Agrodolce Caponata. Pass the tomato vinaigrette at the table.