Take brisket out of the fridge early.
Let it sit for 30 minutes.
Pat it completely dry with paper towels.
Season both sides generously with salt.
Add plenty of black pepper too.
Trim excess fat if needed carefully.
Heat olive oil in your Dutch oven.
Make it very hot but not smoking.
Place brisket fat side down first.
Sear for 4 minutes until browned.
Flip and sear the other side.
This locks in all the juices.
Remove and set aside on a plate.
Add sliced onions to the same pot.
Use the leftover oil and drippings.
Cook onions for 10 minutes slowly.
Stir them often until they soften.
Add garlic and cook 2 minutes more.
The kitchen will smell absolutely amazing now.
Preheat your oven to 325°F now.
Add tomato paste to the onions.
Stir and cook for 1 minute.
Pour in the red wine slowly.
Scrape up all the brown bits.
Add beef stock, brown sugar, and thyme.
Drop in the bay leaves too.
Stir everything together well and bring to simmer.
Return brisket to the pot carefully.
The fat side should face up.
Spoon some sauce over the top.
Cover tightly with aluminum foil first.
Then add the lid for double coverage.
Place in the oven for 3 hours.
The meat needs slow, gentle cooking.
Remove from oven after 3 hours.
Let it rest for 20 minutes.
Transfer brisket to a cutting board.
Slice against the grain into pieces.
Make them about ¼ inch thick.
Return slices to the pot briefly.
Coat them with that delicious gravy.