Chef John's Baby Porchetta

Step 1
Crush fennel seeds in mortar with a pestle for 1 minute. Add garlic, sage, pepper, rosemary, salt, red pepper flakes, and lemon zest; pound into a thick paste, 2 or 3 minutes. Add olive oil and pound until rub is evenly incorporated.

Step 2
Cut a slit 3/4 of the way through the center of the tenderloin, leaving 1 inch on each end uncut. Spread 1 tablespoon of the rub inside the slit; close up roast. Spread the remaining rub evenly over the roast. Wrap bacon strips around the roast, trying to keep seams on the bottom.

Step 3
Wrap roast in plastic wrap and refrigerate for 1 hour.

Step 4
Preheat oven to 450 degrees F (230 degrees C). Line a rimmed baking sheet with aluminum foil; place roast in the center.

Step 5
Roast in the preheated oven until an instant-read thermometer inserted into the center registers 134 degrees F (57 degrees C), about 25 minutes. Let roast rest for 10 minutes and internal temperature rise to 140 to 145 degrees F (60 to 63 degrees C).