There isn't a German version of Cadbury's Dairy Milk and you can only buy it from British specialty shops. Thankfully, almost every major German city has one. I didn't know other countries had their own version. Interesting.
I don't know if it's Cadbury's specifically that do it, but I know some chocolate manufactueres make things to suit national tastes, so I assumed Cadbury's would too. I may be wrong.
British chocolate is mostly cocoa butter, because that's what we like
What milk substitute do you use? Soy or rice milk?
I started with sweetened soy milk, but I quickly lost interest in it, and I'm happy to live without a milk substitute. When I make cereal I use water. If I have a hot drink I'll have it black.
I remember before I was vegan,
cereal with water would taste quite metallic compared to
cereal with milk, but tastes change when you go without something for any length of time.
Cereal with water tastes normal to me now, as normal as
cereal with milk tasted at one time.
On the rare occasions I fancy something creamy, I'll use coconut milk. It can be messy because of it's high saturated fat content, but it's far tastier than soy milk.
The main thing to be cautious of with a vegan diet is vitamin B12. There's disagreement over whether intestinal bacteria produce enough of it that can be absorbed. Your body will probably have enough stored (and will recycle it if you don't) to last you for a year or more, but it will run down eventually. Yeast extract is the only real source that's compatible with a vegan diet. I'm fortunate that I love the stuff.