Ingredients :

• Cream cheese — Use classic Philadelphia in blocks—not the low-fat version, not the spreadable cheese in a tub. Low-fat makes the cheesecake watery and soft. It must be at room temperature for at least an hour before starting. This detail is not optional.
• Blueberries — Fresh if in season, otherwise frozen used directly for the sauce. Avoid canned jars, which are too sweet and lack acidity. Taste one raw: it should be slightly tangy, not just sweet—that’s a good sign.
• Biscuits for the crust — American Graham crackers can be hard to find in some places. Digestive biscuits (McVitie’s) work perfectly. Speculoos also work—they add a cinnamon note that is quite pleasant. Mix them until you get the texture of coarse sand, not a fine powder.
• Thick heavy cream — It lightens the filling slightly and gives it that subtle tangy undertone that distinguishes a real cheesecake from a simple cream cheese mousse. Fold it in last, gently.