INGREDIENTS
1 1/2 lb
filet mignon, trimmed of excess fat and cut into 1-in. cubes
1 tbsp
plus 1 tsp. sugar, divided
1 tsp
kosher salt
1 tsp
pepper
7 tbsp
canola oil, divided
2 tbsp
rice vinegar
2 tbsp
mirin
1 tbsp
soy sauce
2 tsp
dark soy sauce*
1/2 tsp
Vietnamese or Thai fish sauce
1 cup
thinly sliced red onion
3
green onions, ends trimmed, onions cut into 1-in. lengths
1 tbsp
finely chopped garlic
1 tbsp
unsalted butter
1
bunch watercress, tough stems removed
Spicy Lime Dipping Sauce