Cordial Collector

Cordial Collector ("Complete any tonic collection") is a triumph of Episode: Revenant and one of the listed triumphs of the Slayer Baron seal.

How to complete

1. Brew Tonics at the Tonic Table in the Tonic Laboratory in the Last City (beside Eido): gather reagents, activate the equipment, taste test, imbue.
2. Recipes unlock by repetition: craft an Uncommon tonic five times to unlock its Rare version; craft the Rare four times to unlock the Legendary one.
3. Finish every tonic in any one collection (exactly which tonics make up a collection is not stated in the sources I opened).
4. Reagents: Reclaimed Vitality, Powder (common), Flakes (rare), Nuggets (legendary), from Revenant activities, Onslaught Salvation, Tomb of Elders and Fieldwork rewards.

Sibling triumph: Medicinal Master (craft 100 tonics).