Choosing chocolate for brownies
Chopped bar rather than chips, at 60–70%, with the recipe's sugar assumptions checked — brownies are where substitution errors show most.
If you read nothing else
Brownies are mostly chocolate, sugar and fat, so a chocolate substitution changes a large fraction of the recipe. The sugar arithmetic matters more here than anywhere else.
Why brownies are unforgiving
In most cakes chocolate is a minority ingredient. In a brownie it is a large share of the total mass, so swapping unsweetened chocolate for a 55% bar adds roughly 45g of sugar per 100g of chocolate — enough to change the texture as well as the sweetness, because sugar affects how a brownie sets.
Chopped bar, not chips
Chips are formulated with reduced cocoa butter and stabilisers specifically to hold their shape. In a brownie batter that means lumps where you wanted depth. Use chopped bar for the melted-in chocolate, and add chips separately only if you want distinct pockets.
The percentage
60–70% is the reliable range. Below that the brownie tends to cloying; above 80% the low sugar and high solids give a drier, more crumbly result unless the recipe compensates with extra fat. If the recipe is American and says 'semisweet', it is assuming around 58%.
Fudgy versus cakey
That is governed by the fat-to-flour ratio and the egg, not by the chocolate. Choosing a different chocolate will not turn a cakey recipe fudgy — it will change the flavour and the sweetness, and the structure will stay where the recipe put it.
Covered in this guide
- Baking with chocolateThe substitution arithmetic in full.
- Chocolate chipsWhy chips behave differently in a batter.
- Chocolate substitution finderCalculates the compensating sugar adjustment.
Sources
- ChocolateHQ editorial synthesis — ChocolateHQ(citation identity confirmed; passage not re-read)