To add a product to your existing subscription, start by logging into your account here:
https://blackoakcoffee.com/a/account/subscriptions 

Once logged in, you’ll see Your Subscription. Scroll down to Edit Products and click Add Product(s) to subscription, then select the coffee you’d like to include.

Some items can be added to all future orders, while others are available as one-time add-ons only, depending on availability.

Any products added as recurring items will be included with every future shipment in your subscription.