Unfortunately, you can't get real Orion Dulac in Michigan, so this is my take on what Mariner would have served Those Old Scientists

• 1.5oz White rum (I used Plantation 3 Star)
• .75oz Cinnamon syrup
• .75oz Lime juice
• .5oz Absinthe (I used what they make at my local distillery, American Fifth)
• .5oz John D. Taylor Velvet Falernum Liqueur
• 1 barspoon Blue curaçao (for colour)

Shake, and double strain. Garnish with a cinnamon stick, and slowly pour in two barspoon of grenadine so that it sinks to the bottom. This could also be swapped for butterfly pea flower syrup, which is purple. I just wanted the grenadine flavor