Why does red bull make milk curdle?

Red Bull contains high levels of acidity and carbonation, which can cause milk to curdle. When the acidic components of the drink interact with the proteins in milk, particularly casein, it leads to coagulation, resulting in curdling. Additionally, the carbonation can exacerbate this effect by creating bubbles that disturb the milk's structure. This reaction is similar to what happens when milk is mixed with other acidic substances, like lemon juice or vinegar.