Trim ends of brussels sprouts; remove any discoloured leaves.
In food processor and using blade attachment, shred sprouts. Set aside.
In large skillet or wok, cook pancetta over medium heat until crispy, 8 to 10 minutes. With slotted spoon, transfer to small bowl.
Add sprouts to pan; cook until wilted, 8 to 10 minutes.
Add currants, maple syrup, mustard, pepper and pancetta; toss to coat.
