01 - Drain the maraschino cherries thoroughly and pat them completely dry with paper towels. Set aside.
02 - In a medium bowl, combine powdered sugar, softened butter, milk, vanilla extract, and salt. Mix until a smooth, pliable fondant forms. If too sticky, add a little more powdered sugar.
03 - Scoop out a teaspoon of fondant, flatten it in your hand, and wrap it around each cherry, covering completely except for the stem.
04 - Place the fondant-wrapped cherries on a parchment-lined tray. Chill in the refrigerator for 30 minutes to firm up.
05 - Melt the chocolate and coconut oil, if using, together in a heatproof bowl over simmering water using a double boiler or in 20-second bursts in the microwave, stirring until smooth.
06 - Holding each cherry by the stem, dip it into the melted chocolate, coating completely. Let excess chocolate drip off, then place the cherry back on the parchment-lined tray.
07 - Once all cherries are coated, refrigerate for at least 30 minutes until the chocolate sets.
08 - For best results, let the cherries sit for 1 to 2 days at room temperature in a covered container, allowing the fondant to liquefy for a classic cordial effect.