Melt the chocolate in a double boiler or microwave. Add the vegetable oil and stir until smooth.
Dunk the whole macaron in the melted chocolate and refrigerate until the chocolate has hardened.
Put the finished macarons in an air tight container and put them in the fridge for at least 24 hours to "mature"
When you are ready to eat the macarons, remove them from the fridge and let sit at room temperature for at least 20 minutes