In a small saucepan, empty the contents of the jar of blackberry jam and 1 ½ c. water. Bring to a boil and whisk until the jam melts down into the water. Simmer 5-8 minutes. Remove from the heat and cool. Transfer to a permanent storage container. (I use a squirt bottle.) The syrup should be kept in the refrigerator. Can be kept 1 month.

In a cocktail shaker add the tequila, blackberry simple syrup, blue curacao, fresh lime juice, Grand Marnier, pinch of salt, and a splash of water. Add a cup or so of ice and place the lid on the shaker. Shake 40 times.

Take a glass and dip the rim in corn syrup (or any bar syrup) and then dip the rim into the gold sugar. Very carefully pour the shaken margarita into the glass so as not to disturb the sugar. Garnish the glass with edible stars and a rock candy stirrer. Garnish with lime.