It's week four of The Great British Bake Off, just nine bakers remains, and - for the very first time - it is Batter Week. Mary and Paul have set three challenges to test the bakers on some store cupboard classics. To start things off there is a British favourite. It may sound simple, but the judges are looking for perfection - a uniform bake across the batch and a tasty savoury filling. The bakers really have to rise to the occasion in this signature challenge.

The Great British Bake Off Season 7 Episodes...

• s07e01 - Cake Week
• s07e02 - Biscuit Week
• s07e03 - Bread Week
• s07e04 - Batter Week
• s07e05 - Pastry Week
• s07e06 - Botanical Week
• s07e07 - Dessert Week
• s07e08 - Tudor Week
• s07e09 - Patisserie Week
• s07e10 - The Final
• s07e11 - Class of 2015

The Great British Bake Off Show Summary

The Great British Bake Off sees ten passionate home bakers take part in a bake-off to test every aspect of their baking skills as they battle to be crowned the Great British Bake Off's best amateur baker. Each week the nationwide tour sees keen bakers put through three challenges in a particular discipline.

The competition kicks off with cake in the Cotswolds, then moves to Scotland to tackle biscuit baking, then Sandwich in Kent for bread, Bakewell in Derbyshire for puddings, Mousehole in Cornwall for the pastry challenges, and London for the grand final.

Judging the baking are renowned baking writer Mary Berry and professional baker Paul Hollywood; presenting the show are Mel Giedroyc and Sue Perkins, who trace the very particular history of British baking by visiting local baking landmarks and discovering why people bake what they bake today.