1.To prepare the marinade, whisk together all ingredients except olive oil in a large, nonreactive bowl until well blended.
While whisking, add olive oil in a thin stream until emulsified.
Place jalapeño peppers on a cutting surface and slice 4 pieces lengthwise from the outside.
This will eliminate splitting and scraping seeds away.
If you prefer your duck on the spicy side, add some of the seeds to the marinade.
Remove duck strips from marinade and drain.
Lay prosciutto slices on a work surface.
Place a strip of jalapeño, then mango, and finally duck across one end of the prosciutto.
Secure with a toothpick.
Cook evenly on a hot grill, cast-iron skillet, or broiler until lightly browned on all sides (for about 7 to 9 minutes total).
1.To prepare the marinade, whisk together all ingredients except olive oil in a large, nonreactive bowl until well blended. While whisking, add olive oil in a thin stream until emulsified. Add sliced duck, cover and refrigerate 2 to 4 hours, turning occasionally.
2. Place jalapeño peppers on a cutting surface and…