The name of the cake withstanding, turnip cake is most often made with daikon radish. Dried scallops and dried shrimp are sold in many sizes; since you're chopping them up in this recipe, you can use the less expensive smaller varieties. Chinese-style bacon is cured and then dried; it's sold with the skin on. Use a sharp chef's knife to cut it off. Chinese pork sausage is sweet and dry but still easy to slice. Leftovers are delicious in fried rice. All the Chinese ingredients in this recipe can be found in a Chinese supermarket or online. The amount of time it takes to cook down the daikon depends on the quality of the vegetable; an older one will have less moisture and will take longer. A younger daikon will have more moisture.