You gain the following benefits.
Ability Score Increase. Increase your Intelligence score by 1, to a maximum of 20
Eye for Concoctions. Your practice with potion brewing has given you an eye for the small details that distinguish ingredients and effects within potions. You gain Advantage on Influence checks you make when speaking to potion sellers, alchemists, or herbalists. Additionally, you can determine the properties of Potions by spending 1 minute examining them.
Concoct Potion. Once per day after finishing a Long Rest, you can spend one hour working with your chosen tools to create a special concoction or infusion using materials harvested or found in the field. You must have access to your tools during this time. As you gain levels, you learn how to create more powerful items, as shown on the table below. This creation becomes inert after 24 hours. See the Core Rules for more information on the items below.
Level 1 — Potion of Healing
Level 5 — Potion of Greater Healing
Level 11 — Potion of Supreme Healing