How to get Android to tell if your beer is ok. Yes, your beer.

So I started this as a journey to learn how to get an Android App to tell me the brand of the beer I was having, which would be a cool base idea to develop an app such as "Vivino" that does precisely this but with wine. Wouldn't it be nice to have app such as "Vivino" but for beer?… I first started checking how could software determine the contents of an image and came across TensorFlow which is Google's answer to that question (and many many others). TensorFlow provides the base machine learning algorithms that Google use to determine the contents of your images, mails, and your life in general (obviously). Since it is open source you are able to extend it as you like; for example to re-train it with another specific images, improving its chances to classify them.