Sous Vide Marinated Flank Steak

Step 1
Combine soy sauce, honey, olive oil, vinegar, and garlic in a flat glass dish.

Step 2
Trim any surface fat from steak. Place steak into soy sauce mixture; turn to coat. Allow to marinate in the refrigerator for about 5 hours, turning occasionally.

Step 3
Place a heat-resistant pad underneath a large pot filled with water. Attach a sous vide precision cooker to the pot and preheat water to 140 degrees F (60 degrees C).

Step 4
Remove steak from marinade and shake off excess liquid; discard marinade. Place steak into a food-grade polyethylene bag and vacuum seal or use the water immersion method to remove all air. Submerge the bag in preheated water; set the timer for 3 hours.

Step 5
When the timer is up, remove steak from the bag and pat dry with a paper towel.

Step 6
Preheat an outdoor grill for high heat and lightly oil the grate.

Step 7
Place steak on the preheated grill and cook on one side for 2 to 3 minutes. Cut in half and serve.