Coffee and Chocolate, what’s not to love?

How much vanilla extract should I add to my chocolate?

I have been making your milk chocolate using your suggested 25% blend of cocoa, sugar, milk power, and cocoa butter. I'm curious what the best way would be to try different percentages without messing up the end product?

Now I'm studying the book called "INDUSTRIAL CHOCOLATE MANUFACTURE AND USE" 4 th edition by S T BECKETT. and I'm having some doubts in this page which I given below, can you explain what is DHHM and what exactly the figure is saying.

I have tried making a milk chocolate with coconut milk powder but it is really soft and it is driving me crazy.  I want the flavor really strong so I used 35% coconut power but it won’t set up.  Should I use less cocoa butter?  I put in about 8 oz to a two pound batch.  I’ve even tried tempering it and it stays soft. 

It looks like you ended up with the perfect storm of a recipe to just not behave in a cooperative fashion.  You both have too much fat in the recipe and too much of it is coconut oil.    Let’s see if we can get you a good coconut milk chocolate recipe that is still strongly flavored.