The mixture you liked at the Mahane Yehuda market, at Yossi's store: The best nuts roasted with maple and coarse salt. Cashews, almonds, pecans, hazelnuts and sometimes more (depending on Yossi's mood that morning).
Not only a perfect snack, chop and sprinkle on green salad or rice pilaf.
Keep in a cool dry place for up to a month. It can be stored in the freezer for another six months.