Pour some sugar or salt on a plate. Rub a lime wedge around the edge of a glass. Roll the rim of the glass in the sugar or salt to coat the rim.
In a cocktail shaker filled with ice, add tequila, peach schnapps, peach nectar, peach nectar, lime juice and simple syrup. Shake well.
Strain into a margarita glass or rocks glass with ice. Garnish with a lime wedge and some peach slices, if desired.
Notes
No peach nectar? You can typically find peach nectar in the international aisle of the grocery store. If you can't find it, then make your own fresh peach purée by blending peaches and then straining through a fine mesh strainer.More peach flavor: Use peach simple syrup if you want even more peach flavor, or if you don't have peach juice. Then make up the difference with lime juice instead. (You can make peach syrup with frozen peaches or fresh.)Frozen peach margarita: Make this a frozen margarita by blending the ingredients with ice or using frozen peaches.Non-alcoholic peach margarita: Substitute 2 ounces zero-proof spirit like Seedlip Grove 42 or Ritual tequila alternative for the tequila and peach schnapps.