National Peanut Brittle Day is observed worldwide on January 26 each year to celebrate the popular candy known as peanut brittle. This confection, which consists of nuts and hard sugar candy, is believed to have origins linked to Irish traditions of eating sugar-coated nuts, eventually evolving into the brittle we recognize today. Immigrants brought the dessert to the United States, where peanuts became the primary nut used due to their availability. To celebrate, people can try making their own peanut brittle, although it is advisable to use a candy thermometer and avoid cooking on humid days, as moisture can affect the candy's texture. Alternatively, one can purchase peanut brittle from local candy shops to enjoy this sweet treat on the holiday.