Trim tenderloin of any fat and sinew. Tie the lamb piece in three places with kitchen string to hold its shape. Brush with olive oil and cover the meat with mint leaves. Place in fridge while preparing rest of recipe (at least 1/2 hour).
Prepare the Mint Sauce: Heat lamb bones and any meat trimmings in fry pan with oil- color gently then drain fat from pan.
De-glaze the pan with the red wine, then add the beef stock and mint stems. Simmer for at least 20 minutes while preparing the rest of the dish- occassionally skim fat from the sauce.
Prepare the Tomato Concasse’- remove skins from the tomatoes. First, remove top part of the tomato core and then place an ‘X’ on bottom of each tomato. Dip each tomato in pan of boiling water for about 30 seconds to loosen the skin. Remove skin and seeds, then chop each tomato finely.
Chop onions finely then ‘sweat’ them in fry pan with a pinch of salt and sugar. Add the tomatoes and cover pan with baking paper. Let simmer for about 10 – 15 minutes until all veggies are softened and most of the liquid has evaporated.
Prepare the spinach- wash spinach leaves and remove stems. Roughly chop the spinach and then cook in fry pan with some butter and oil until softened.
Prepare the Noisette Potatoes- peel the potatoes then ‘gouge’ out small potato balls using a melon baller.
Heat pan of boiling water then blanche the potato balls in the hot water for several minutes until they start to soften.
Heat oil and butter in fry pan. Over high heat, saute’ the potato balls until they are cooked through and lightly golden in color. Set aside until final plating.
Cook the Lamb Tenderloin (backstrap)- remove the meat from the fridge. Heat oil in fry pan and brown the meat on both sides- about 6 -7 minutes total.
Cover the meat in foil and heat in oven until meat is pink (or rose’) in colour on the inside- at least 10 minutes. In order to help the interior of the meat cook faster, I placed several ‘cuts’ in the meat about 2 cms deep so the heat can reach the inside easier.
Remove from oven and let rest for at least 15 minutes before final plating.
Finish off the mint sauce- reduce sauce until medium thick in consistency and then add salt to taste. If sauce has reduced too much, add some more stock or water. Remove mint stems from the sauce then add some finely chopped mint leaves.
Final Plating- make sure all ingredients are warm before final plating.
Place medium or large pastry ring in middle of plate. First add a layer of spinach to the bottom of the ring, followed by a layer of the tomato concasse’ then another layer of the spinach. Add finely sliced pieces of lamb on top and then crown with several mint leaves.
Add the mint sauce around side of the dish then place the noisette potato balls around the side. Phew!! You are now finished!