01 -
Turn your oven on to 275°F and let it warm up.
02 -
In a big bowl, stir together the water, ketchup, and dry soup mix until it's smooth.
03 -
Put the brisket in your roasting pan, pour the sauce on top, and flip it over so it's covered on all sides.
04 -
Use foil to seal the pan tightly, being careful the foil doesn't touch the food.
05 -
Bake for about 7 to 8 hours until it’s tender enough to poke with a fork but stays intact.
06 -
Let it cool for 1 to 2 hours, then slice into half-inch strips going against the grain.