When newlywed Victoria Combe baked a cake for her in-laws' first visit, it was a sunken, soggy disaster. In despair, she appealed in her column in the Daily Telegraph for help: 'Is there a cake recipe out there I cannot ruin?' Thankfully, scores of readers came to her aid with precious recipes that had been handed down over the generations and had never failed. The results were mouth-wateringly good. Here she shares the best of the Telegraph readers' recipes and tips for foolproof cakes, biscuits and scones.