The remaining bakers have to try and bake without sugar, gluten or dairy this week. The signature challenge sees the bakers having to create a variety of sugar-free cakes, from an upside-down pineapple cake to carrot cakes. The technical challenge features gluten-free pittas. For their showstopper, the bakers have to make dairy-free ice cream rolls.
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.
The Great British Bake Off - Alternative Ingredients Synopsis and Schedule