How do I make a Lime Daley if I don't have fresh limes?

Here is the recipe for a Lime Daley if you don't have fresh limes:

• ice to taste
• 3 tablespoons lime juice
• 2 drops Boyajian lime oil
• 1 twelve-ounce bottle Blenheim "Old #3" (red cap) ginger ale

Put ice in a tall glass. Add lime juice and lime oil. Slowly pour in Blenheim. Stir well.