Instant Pot Corned Beef Brisket
Beer-Braised Instant Pot Corned Beef — Melt-in-Your-Mouth St. Patrick's Day Classic
The Instant Pot turns this traditional Irish-American favorite into weeknight magic, using dark ale and aromatic spices to create fork-tender beef in a fraction of the usual time. The pressure cooking concentrates all those savory flavors while keeping the meat incredibly moist. Perfect for pairing with cabbage and potatoes, or piling high on rye bread.
March brings predictable rituals: green beer flows freely, everyone claims Irish heritage, and grocery stores stack corned beef briskets like cordwood near their front doors. But here's what most people miss — corned beef isn't actually Irish. It's an Irish-American creation, born from necessity when Irish immigrants in New York couldn't find their beloved bacon and adapted to what was available in American butcher shops.
The Instant Pot changes everything about making corned beef at home. What traditionally requires a full day of slow simmering now happens in about two hours, start to finish. The pressure cooking works magic on that tough brisket, breaking down all the chewy connective tissue while the dark ale adds a malty depth that plain water can't match. The trivet keeps the meat elevated above the cooking liquid, so you get proper braising instead of boiling.
This isn't just faster — it's often better than the stovetop method. The sealed environment traps every bit of flavor and moisture, creating corned beef so tender it barely holds together when you slice it. Whether you're planning a proper Irish-American feast with cabbage and potatoes or building the ultimate Reuben sandwich, this technique delivers consistent results every time.
Ingredients
- 2½ lbcorned beef brisket with spice packet included
- 1 mediummedium yellow onion, cut into thick wedges
- 3 clovegarlic cloves, roughly chopped
- 1½ cupdark ale or stout beer
- 1 packetcorned beef seasoning packet (from brisket package)
Instructions
- Set the metal trivet rack inside your Instant Pot — this elevates the meat above the cooking liquid for better texture.
- Scatter the onion wedges and chopped garlic across the bottom of the pot. They'll infuse the cooking liquid and create a flavorful base.
- Pull the brisket from its packaging and set aside the spice packet. Rinse the meat under cold running water to remove excess brine — this prevents the final dish from being too salty.
- Nestle the brisket onto the rack with the fat cap facing down. This positioning helps the fat render properly and keeps the meat moist during cooking.
- Open the seasoning packet and sprinkle it evenly across the top surface of the brisket, letting some fall around the sides. Don't worry about perfect coverage — it will distribute during cooking.
- Carefully pour the beer along the inner edges of the pot, avoiding the seasoned meat surface. This preserves the spice coating while adding the liquid needed for pressure cooking.
- Seal the lid and cook on high pressure for exactly 90 minutes. The long cooking time breaks down the tough connective tissue into silky, tender strands.⏱ 1 hr 30 min
- Use quick release to vent the pressure immediately when cooking finishes. Carefully lift out the brisket and gently brush away the loose spices while it's still warm. Allow it to rest for 5-10 minutes before slicing against the grain for maximum tenderness.
Tips & Tricks
- Always rinse the brisket thoroughly before cooking — the packing liquid is intensely salty and will overpower your final dish if you skip this step.
- Don't skip the trivet rack; cooking the meat directly in liquid creates a mushy texture instead of proper braising.
- Fat cap down is crucial for proper rendering — the melting fat bastes the meat from below while keeping the top surface from drying out.
- Quick release is essential here; natural release will overcook the meat and make it stringy rather than tender.
- Slice against the grain in thin cuts — corned beef has very pronounced muscle fibers that need to be severed for easy chewing.
Frequently Asked Questions
Can I use a different beer instead of dark ale?
Yes, but choose something with body — porter, stout, or brown ale work well. Avoid light lagers as they won't add much flavor. In a pinch, beef broth works too.
What if my corned beef didn't come with a seasoning packet?
Make your own with 2 tablespoons pickling spice, 1 tablespoon black peppercorns, and 1 teaspoon each of mustard seed and coriander seed, roughly crushed.
How do I know if it's done cooking?
Properly cooked corned beef should shred easily with a fork but still hold its shape when sliced. If it's tough, cook for another 15 minutes on high pressure.
Can I add vegetables directly to the pot?
Root vegetables like carrots and potatoes can go in, but add them during the last 15 minutes using the sauté function. Cabbage only needs 5 minutes and should be added at the very end.