Quick diagnosis: Custard curdles when egg proteins overcoagulate and squeeze out liquid. Minor soft grains may be strained; scrambled custard needs replacement.
What the Symptoms Tell You
The mixture becomes grainy, watery or forms cooked egg pieces.
Why This Usually Happens
The most common causes are connected to temperature, ratio, timing, ingredient condition or technique. Compare the dish with these specific checks:
- Heat was too high or pan corners overheated.
- Hot liquid was added too quickly to eggs.
- Cooking continued beyond thickening.
Professional Rescue Method
- Remove from heat and cool the pan base.
- Blend and strain only minor soft graininess.
- Start fresh if firm curds or eggy flavour remain.
Safety and Quality Limit
Follow strict egg and dairy cooling rules. Do not serve badly curdled or unsafely held custard.
Prevent It Next Time
- Temper gradually.
- Use low heat or a bain-marie.
- Stop at the correct coating cue and cool promptly.
Chef’s Verification Test
A line drawn through custard on a spoon should remain clean without grains.
Use this guide as general culinary education. Follow local food-safety rules, allergen controls and equipment manufacturer instructions.