Choosing the product
Firm apples slice evenly. Taste before adding sugar because sweetness and acidity vary. Soft apples or apple purée make a different filling.
Preparing and using it
Wash, prepare as specified and slice to similar thickness. Avoid a thick centre mound. Keep accumulated juice off pastry and slice close to assembly.
Substitutions and adaptations
Firm pears make another tart and can release more juice. Purée needs a controlled layer and another balance. Change one parameter at a time for a first trial.
Mistakes to avoid
A golden top does not prove the base is baked. Check pastry too and cool before slicing. Hot or wet filling makes neat serving harder.
