THE CHALLENGE

Hellmann’s is the U.S. mayonnaise category leader, but Gen Z underindexed on mayo and favored bolder condiments. Garlic Aioli had strong product credentials, but it was not breaking through on the shelf and sales were flat. The brand needed a culturally relevant idea that would drive awareness, conversation, and sales without relying on traditional advertising.

THE STRATEGY

Research revealed that flavored condiment buyers overindexed for reading, particularly romance novels, leading us to BookTok, a fast-growing Gen Z community where fandom drives conversation and influence. Within BookTok, Vampire Romantasy was surging in popularity, built around shared rituals and lore, including one timeless truth: garlic keeps vampires away. Instead of interrupting the community with advertising, Hellmann’s partnered directly with bestselling author Jennifer L. Armentrout to co-create something fans would genuinely engage with.

THE EXECUTION

Hellmann’s and Jennifer L. Armentrout created a limited-edition “Vampire-Proof” version of her novel, The Primal of Blood and Bone, printed with garlic-infused ink. Creator mailers shaped like coffins included the garlic-scented book, Hellmann’s Garlic Aioli, and themed recipe cards. Organic seeding across BookTok, Instagram, and Reddit triggered unboxings, fan theories, and conversation, while Hellmann’s amplified native community content on owned channels using the language and tone of the fandom. The campaign’s built-in headline, “the world’s first garlic-scented book,” helped drive broad earned media coverage.

THE OUTCOME

Bestsmeller transformed Hellmann’s Garlic Aioli from a struggling SKU into a cultural conversation. The campaign drove:

• Garlic Aioli sales rose 88% within four weeks and unit sales increased 17.5% year over year And The Primal of Blood and Bone debuted at #2 on The New York Times Bestseller list.