Pre-chill a Margarita or coupe glass in the freezer for at least 10 minutes.
Prepare a lime wheel for garnish and set aside.
Add 45ml blanco tequila, 22.5ml triple sec, 22.5ml fresh lime juice, and 15ml rich sugar syrup to a blender.
Blend briefly on a low setting to combine the liquids.
While blending on low, add a small pinch of xanthan gum (approximately ¼ barspoon) to stabilise the emulsion and improve texture.
Add 210ml crushed ice to the blender and blend on high until completely smooth and homogenous.
Pour into the chilled glass and garnish with a lime wheel on the rim. Serve immediately.
Xanthan gum is the professional's secret to a frozen Margarita that holds its silky texture without separating - a tiny amount stabilises the blend and prevents the dreaded icy, watery split as the drink warms.
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