To achieve the ideal texture for your pudding swirls, it's essential to focus on both the dough and the custard cream. For the dough, ensure you knead it until it becomes smooth and elastic. The rising time is equally crucial; allowing the dough to rise in a warm, draft-free environment will help develop the gluten, which contributes to a light and airy texture. When it comes to the custard cream, whisk the egg yolks with sugar and cornstarch until the mixture becomes pale and creamy. Gradually incorporating the warmed milk prevents the yolks from cooking too quickly, resulting in a smooth and well-integrated cream. Lastly, rolling the dough tightly when forming the swirls will create beautiful layers, making every bite rich and delightful.