In a small skillet, toast the fennel seeds and black peppercorns over moderately high heat until fragrant, about 2 minutes; transfer the toasted spices to a grinder and let cool completely.
Finely grind the spices and transfer them to a large bowl.
Add the lamb, red wine, garlic, rosemary, thyme, tarragon, salt and crushed red pepper and knead until thoroughly blended.
Form the meat into ten 3-inch patties, about 1 inch thick.
Spread the sheet of caul fat on a work surface and cut into ten 8-inch squares.
Form the crepinettes by wrapping each lamb patty in a square of caul fat, pressing to create a smooth package.
Heat the canola oil in a very large ovenproof skillet until shimmering.
Add the lamb crepinettesand cook them over moderately high heat until golden on the bottom, 3 minutes.
Flip the lamb crepinettes and cook for 2 minutes longer.
Transfer the skillet to the oven and roast the lamb crepinettes until cooked through, 6 minutes longer.
Let rest for 3 minutes.
Transfer the lamb crepinettes to a platter and serve.