1, 100g sugar in a bowl, add a little pigment and stir well. A little pigment can give a strong color, so mix it a little at a time and be careful. Patiently adjust the deepest color you need. Add 5ml egg white to the mixed colored sugar and stir well until it looks like wet sand. Don't put too much egg white, or it will dissolve sugar particles.

2. Pour the colored sugar mixed with egg white on the counter, scrape it flat with a scraper, and then press it with a rolling pin to make the sugar particles as dense as possible, with a thickness of about 7 mm ... Make a heart shape with a knife mold, gently demould it, and air it in a baking tray with a silica gel pad. If the sugar can't keep its shape, you can add a little more protein and stir it again before operation. When the sugar particles dry on the knife die and there is no way to operate, gently wash the knife die with warm water to ensure that it is completely dry before continuing carving.

3. Pour the remaining colored sugar back into the bowl, add new 100g white sugar, and then add 5ml egg white. Repeat the previous step to bring up the desired color. Repeat 2 and 3 to get 5-6 small sugar centers with gradually lighter colors. Excess sugar can be stored in a sealed bag for next use.

4. Preheat the oven to 200 degrees, bake for 10 minutes, and leave it overnight. Sugar will fuse and eventually become a small heart-shaped sugar cube (similar to the feeling of sugar cube).