For the best flavor, use freshly squeezed carrot juice. Avoid store-bought juices with additives. Sifting the baking soda ensures even distribution and prevents clumps in the toffee. Keep a close eye on the temperature during the final stages of cooking to prevent burning. The color should be a deep amber. If you do not have parchment paper or foil, you can grease the baking pan very well with butter instead. Make sure the butter covers every part of the pan. This toffee is best enjoyed within a week for optimal crispness.