EDIT: Mocha muffins

https://www.youtube.com/watch?v=B7PWMCmlsZg
http://www.joyofbaking.com/muffins/MochaMuffins.html

This is for 12 muffins.

Ingredients
120 ml milk
7.5 ml white vinegar

2 large eggs, room temperature
1 teaspoon pure vanilla extract
120 ml yoghurt
60 ml of espresso, cooled to room temperature

225 g all-purpose flour
25 g unsweetened cocoa powder
205 g dark soft brown sugar
1/2 teaspoon baking powder
1 teaspoon baking soda
1/4 teaspoon salt

150 g chocolate chips


Directions
A few things will need to be around room temperature, so start with those: break two eggs in a bowl (that will eventually hold all the liquid ingredients). Make an espresso (or equivalent; I used 1.5 teaspoons of instant coffee diluted in 60 ml of hot water) and set aside to cool. Measure the yoghurt and also leave outside to come to room temperature. Put the milk with the vinegar in a glass cup and leave on the counter for at least ten minutes to make buttermilk.

Sift the flour and cocoa powder into a large bowl. Measure out the sugar, but before adding it into the dry mix, sift through it with your fingers and break up and lumps. Add the rest of the dry ingredients and the chocolate chips and mix. NEXT TIME: try putting the chocolate chips on top after the batter is in the cups instead of mixing them with the dry ingredients (last time there were too many chips at the bottom).

Prepare the muffin trays (for 12 muffins) by greasing or lining up with muffing cases, and maybe turn on the oven to 460 K (~190 degrees Celsius).

If the liquid ingredients have all reached temperatures close to room temperature, you can start. Whisk the eggs, add the vanilla, the yoghurt and then the coffee. Then add the buttermilk that was prepared earlier.

Once everything is mixed, pour the liquid ingredients into the dry ingredients and mix lightly by hand until everything has blended just enough. Divide equally in the prepared cups and place the trays in the oven until a toothpick inserted in the centre comes out clean (about 18-23 minutes).

Allow to cool for 10 minutes and take out of the trays and onto a cooling rack.