In a microwave bowl, heat the almond milk and chocolate chips in 30 second intervals, mixing until smooth.
In a bowl of a stand mixer with the whisk attachment, whip the aquafaba, salt, vinegar and cream of tartar until very still peeks form.
Once the chocolate mixture has reached room temperature, mix in a couple of spoonfuls of the stiff aquafaba mixture. Then, transfer the chocolate mixture in with the remaining aquafaba mixture and fold in using a rubber spatula until just combined. Transfer to an airtight container and freeze until hardened, around 6 hours.