Why did my Japanese cheesecake crack?

Most cracks come from heat that is too high, shallow water bath, or stiff meringue. Keep medium-soft peaks and follow the staged 160 C to 140 C schedule.

Why does it collapse after rising?

Usually underbaking, overwhipped meringue, or cooling shock. Bake until set with a soft gelatin jiggle, then cool in the oven in two stages.

Why is there a dense wet layer at the bottom?

This can happen from deflated folding, unstable water bath, or water leakage into the pan. Loosen with one-third meringue first and wrap foil tightly.

Yes. You can reduce meringue sugar from 120 g to 100 g for less sweetness. Going much lower can weaken foam stability.

Fool-Proof Japanese Cheesecake (20 cm / 8-Inch)

Name: Fool-Proof Japanese Cheesecake (20 cm / 8-Inch)
Prep time: 30 min
Cook time: 1 h 20 min
Total time: 1 h 50 min
Yield: 10
Ingredients: 250 g cream cheese (full-fat, room temperature); 50 g unsalted butter; 100 g whole milk; 60 g cake flour (or 50 g plain flour plus 10 g cornstarch); 20 g cornstarch; 5 pieces egg yolks (from large eggs); 1 tsp vanilla extract; 12 g lemon juice (optional); fine salt (pinch); 5 pieces egg whites (from large eggs); 120 g caster sugar; 0.25 tsp cream of tartar (or 1 tsp lemon juice); 5 g cornstarch (mix into sugar before adding to egg whites)

Fool-Proof Japanese Cheesecake

This version is designed for reliability, not just height. The method uses a warm smooth base, medium-soft meringue, deep hot water bath, and staged cooling. That combination is what helps reduce cracking, hard collapse, and wet bottom layers.

What "Done" Looks Like

At the end of baking, the cake should be set around the edge, lightly golden on top, and jiggle like soft gelatin in the center. It should not slosh like liquid. A skewer can come out slightly moist, but not with raw batter.

Tin Size Adjustment (For 6, 7, and 9 Inch)

Your site dropdown can scale the ingredients automatically, but pan size still changes baking behavior. Use these practical targets:

6-inch pan: use about 0.56x of the 8-inch ingredient quantities.
7-inch pan: use about 0.77x of the 8-inch ingredient quantities.
8-inch pan: base recipe (1.00x).
9-inch pan: use about 1.27x of the 8-inch ingredient quantities.

Because depth changes, monitor doneness by jiggle, not only by time:

6-inch: center sets faster; start checking 8 to 10 minutes earlier in the second phase.
7-inch: start checking 5 to 8 minutes earlier.
9-inch: may need 8 to 15 extra minutes in the 140 C phase, depending on pan height and oven behavior.

If using your dropdown for scaling, keep the same method sequence and water bath depth, then adjust only final bake duration based on visual doneness.

Common Pitfalls and Fixes

Big top crack: Use medium-soft peaks, deep water bath, and tall parchment collar.
Hard collapse after rising: Bake until set with jiggle, then follow oven-off and door-cracked cooling.
Wet center after long bake: Keep the initial 160 C set phase and use hot water, not lukewarm.
Eggy flavor: Keep lemon and vanilla in, avoid overbaking, and chill overnight.

Make-Ahead and Serving

This cheesecake is best baked the day before serving. Chill overnight so flavor and structure settle. Unmold while cold, then hold at cool room temperature for 15 to 20 minutes before slicing for the cleanest cut and best texture.