Tonics are the upgrade system for Destiny 2's latest episode, Revenant. And much like last episode's Research Bays, they can seem overwhelming at first. The game does a reasonably good job at walking you through the process of actually creating a tonic, but not how to unlock new recipes—which you'll need in order to unlock the Fieldwork missions that reward some useful upgrades that make the whole process quicker. One day Bungie might properly explain the meta-structure it has created for its new release, but today is not that day.
Fortunately once you've learned the tricks to Destiny 2's tonics, and how to unlock new recipes, it's less bewildering than it might initially seem. Read below to discover how to unlock new tonics and see what each recipe can provide.
To discover new tonics in Destiny 2 you need to make more tonics. Each time you craft a tonic in the Tonic Types menu, there's a chance that you'll unlock a new recipe. However, there are a couple of thing to consider:
You don't actually need to brew the tonics in order to see any you've unlocked. As you select tonics in the Tonic Types menu, any new ones you unlock will appear there straight away. If you want to unlock tonic recipes even quicker, make sure to prioritise the Major Fieldwork II: Nessus quest from Eido, since this increases your chance of unlocking new recipes when you craft tonics.
Once you've completed some of the Minor Fieldwork quests you get from Eido, you can undertake a Major Fieldwork quest which provides an upgrade related to crafting tonics.
The upgrades are:
Reagents are the ingredients you use to craft tonics and they each come from a particular activity. You can also get reagents as a reward from Eido for completing minor and major fieldwork tasks, or by claiming them from her seasonal reputation reward track. If you want to see the info below in-game, check the Tonic Capsule in your inventory.