Cut the pineapple into small 1 inch chunks and place them in a medium saucepan. Pour in the sugar and water, mix well then bring everything to a boil over medium heat. Once the pineapples start to soften, use a wooden spoon or potato masher to press down on the pineapples to release all of the juice. Once the liquid begins to boil reduce the heat and let simmer on low for 10-15 minutes.
Remove the pot from the heat and let the syrup cool slightly before straining. Use a large mesh strainer or cheesecloth to strain the syrup into a jar or bottle and discard the pineapple. Store in the refrigerator for 2 weeks.
Pineapple Mezcal Margarita
Add the Tequila, Mezcal, pineapple simple syrup, Cointreau, lime juice, and ice to a cocktail shaker and shake for 7 seconds until the shaker is chilled. Pour the cocktail over ice into a margarita or old-fashioned glass. Garnish with a pineapple leaf and Tajin.
You can make this with only tequila by using 2 oz. of tequila