Cook the Amaranth with the water: bring to a boil and cook for 20 minutes until you get a thick and sticky mixture like oatmeal porridge. Transfer to a colander placed on a bowl, and set aside until the Amaranth has cooled completely. (You can prepare the Amaranth in advance and store it in the refrigerator).
Melt the chocolate and cocoa butter in a microwave or double boiler. If melting in the microwave, do this in breaks: one minute, remove and mix and return for another half minute until it melts, mix again.
Transfer the chocolate mixture to a bowl, add the cooked amaranth, cocoa powder, cornflake crumbs, maple syrup, vanilla extract, and salt. Mix well, taste, and adjust sweetness if necessary. Refrigerate for about an hour until the mixture sets.
Form balls about 1.95 inches in diameter (5cm) roll the balls in shredded coconut, sifted cocoa powder, colored candies, or roasted and ground hazelnuts, place in cuffs, transfer the chocolate, and amaranth balls to an airtight container, and keep in the refrigerator or freezer.