Melt coconut oil: Gently melt until liquid. Do not overheat.
Combine in jar: Pour tequila into the Weck jar and add melted coconut oil.
Shake hard: Seal and shake for 20–30 seconds so the oil disperses.
Infuse: Let sit at room temp for 2–4 hours, shaking occasionally.
Freeze overnight: Place jar in freezer until oil fully solidifies on top (usually overnight).
Remove fat cap: Poke through or lift off the solid coconut oil layer.
Fine strain: Strain tequila through coffee filter or cheesecloth to remove remaining fat particles.
Bottle and store: Return to bottle or keep in jar. Store at room temp or freezer.