Fitness coach Ralston D'Souza states that all cooking methods destroy some nutrients, but pressure cooking is more efficient.

The pressure cooker really makes this corned beef tender, juicy, and full of great flavor. The vegetables are cooked to perfection. What is there not to love about this classic dish? It's so good, you ...

As of Jan. 24, grab an Instant Pot Duo Plus for just $69.99 at Amazon. That's a 46% discount and a $60 price cut on a 9-in-1 pressure cooker.

They work by sealing tightly and allowing high-pressure steam to build up during cooking, raising the temperature inside the pot to above the boiling point of water. This makes food cook more quickly.