Chop 200 g dark chocolate chunks. Chill in the refrigerator until use.

Using a mixer, soften butter at medium speed for 1-2 minutes. Add white and brown sugar and salt and mix at medium high speed until fluffy and light brown. Beat in egg and vanilla extract, and mix at high speed until it looks like buttercream fluffiness.

Sift in the flour and baking soda, gently fold into the mixture using a spatula. When it’s almost combined, add the chocolate chunks from the fridge and finishing mixing.

Preheat the oven at 175 degrees Celsius if the oven runs hot, otherwise set to 185 degrees Celsius. Scoop the cookie dough onto a sheet lined with parchment paper using an ice cream scooper.

Allow cookies to bake for around 7-8 minutes. The first batch might take around 9-10 minutes. For a not really structured cookie, take out of the oven when cookie looks pale and light. For a slightly crisper outside and chewier center, take out of the oven when cookie looks like a toastier brown. Cool on the sheet for four minutes, and cool on a cooling rack after.