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To explore labdanum’s utility as an adhesive, Ochando and his team dug a replica hearth in an open-air site in Portelas, Portugal.

In one piece here, a small brown pool of warmed labdanum resin rests within a zippered cloth clamshell, emitting faint, earthy wafts.

This one takes you straight to the carnival: a basket of roasted nuts, cotton candy, caramel apples, pink peppercorns and bergamot over a base of labdanum, geranium, patchouli and wood chips.

Then take the best labdanum, benjoin, with storaxes, ambergris, civet, and musk.

GUM CISTUS.—The gum labdanum is procured from this shrub, and is its only produce used in medicine.