Aydin Chestnut Product Description and Distinctive Features: Chestnuts, which belong to the Fagaceae (Beech family), alongside oaks (Quercus sp.) and beeches (Fagus sp.) within the Fagales order, are a type of hard-shelled fruit. Known for their value for centuries, chestnuts are used in a variety of industrial applications, including their shells, wood, leaves, and charcoal. However, the most economically significant product is the fruit itself. These fruits are typically consumed as a table nut or processed into different forms to serve as industrial raw material. One of the key methods of utilization, aside from fresh consumption, is the creation of chestnut sugar confectionery. When studying the chestnut genotypes from the Nazilli district in Aydın Province, which are noted for their superior "fruit size"—a key factor in chestnut selection research—it is evident that these chestnuts produce significantly large fruits. The six selected genotypes show fruit weights ranging from 13.445 g to 19.383 g, with the number of fruits per kilogram falling between 51 and 78. These figures are much higher than the fruit sizes seen in other regional studies. For example, in a chestnut selection study in the Marmara Region, the fruit weights of the types varied from 5.00 g to 21.400 g. Similarly, in a study conducted in the Erfelek district (Sinop), over a span of three years, the lowest recorded fruit weight was 5.46 g, and the highest was 10.78 g. These values are nearly half of those observed in the Nazilli chestnuts. In another study conducted in the Aegean Region, fruit weights ranged from 8.85 g to 18.51 g. Therefore, it is clear that the chestnuts from Nazilli are larger in size compared to those from the Aegean Region. In the research area, the examined chestnut types typically feature a "fruit shell" that is shiny and chestnut-colored, although it can range from matte light brown to dark brown depending on the genotype. When evaluating the selected chestnut genotypes from Nazilli based on "seed coat peelability" and "seed penetration status"—both crucial factors for processing chestnuts into sugar—it is generally observed that the seed coat only slightly penetrates the seed, and the seed shell is easily peelable. Production Method: When studying the chestnut genotypes from the Nazilli district in Aydın Province, which are noted for their superior "fruit size"—a key factor in chestnut selection research—it is evident that these chestnuts produce significantly large fruits. The six selected genotypes show fruit weights ranging from 13.445 g to 19.383 g, with the number of fruits per kilogram falling between 51 and 78. These figures are much higher than the fruit sizes seen in other regional studies. For example, in a chestnut selection study in the Marmara Region, the fruit weights of the types varied from 5.00 g to 21.400 g. Similarly, in a study conducted in the Erfelek district (Sinop), over a span of three years, the lowest recorded fruit weight was 5.46 g, and the highest was 10.78 g. These values are nearly half of those observed in the Nazilli chestnuts. In another study conducted in the Aegean Region, fruit weights ranged from 8.85 g to 18.51 g. Therefore, it is clear that the chestnuts from Nazilli are larger in size compared to those from the Aegean Region. In the research area, the examined chestnut types typically feature a "fruit shell" that is shiny and chestnut-colored, although it can range from matte light brown to dark brown depending on the genotype. When evaluating the selected chestnut genotypes from Nazilli based on "seed coat peelability" and "seed penetration status"—both crucial factors for processing chestnuts into sugar—it is generally observed that the seed coat only slightly penetrates the seed, and the seed shell is easily peelable.