Cut excess fat from lamb neck chops. Skin kidneys, and slice the meat on either side of the centre gristly bits. Set aside.
Peel carrots and chop into small dice. Slice celery finely, and chop onions finely. Heat butter and oil in a heavy-based frypan, add carrots, celery, onion, and the slice of speck, and cook for 10 minutes until they start to soften. Add white wine and allow to bubb