Help With A Cocktail

My wife and I were out to dinner in Houston Saturday night and I ordered a "Southern Hospitality" made with Buffalo Trace bourbon, Amaro Nonino, fresh lemon juice, pecan orgeat.

Had a lemon wedge wrapped around a pecan with mint for garnish. Any suggestions for how this would be made? Getting my hands on the pecan orgeat later this week and will experiment a bit but I have no idea on volume of each item. Thanks!