Kale (Brassica oleracea L. var. acephala) is an autochthonous Croatian vegetable culture, especially popular in the southern coast of Dalmatia and neighboring Bosnia and Herzegovina, but unfortunately poorly researched. With the development of science and projects that rely on the popularization of indigenous cultures, raštika is now increasingly the subject of research due to its rich nutritional composition and biological effect on human health. In this paper, the application of different extraction methods (ultrasound - UZV and microwave - MAE), as well as solvents (water and 50% ethanol), on the yield of total phenols in extracts of kale from the territory of Herzegovina. The proportion of total phenols was determined by the Folin-Ciocalteu spectrophotometric method and antioxidant activity was tested with different methods, depending on the mechanism of action: FRAP (Ferric- reducing antioxidant power), DPPH (2,2-Diphenyl-1-picrylhydrazyl assay) and ORAC (Oxygen radical absorbing capacity). The obtained results indicate an abundant phenolic composition of extracts prepared using water as solvent in both extraction methods, ultrasound and MAE (250-270 mg GAE/L). Comparing the extraction methods, MAE method stood out, which in a much shorter time gave almost similar yields of phenolic components compared to ultrasound. The antioxidant activity determined by the FRAP method was the best in aqueous extracts, while the ORAC and DPPH methods showed large differences in antioxidant activity, especially in ethanol samples extracted by ultrasound and microwaves. The obtained results undoubtedly differ, but all tested samples show extremely good antioxidant potential and total phenolic contents. Considering that the differences in the results of phenolic composition and antioxidant activity of the tested samples was very small, the microwave was chosen as the most appropriate extraction method because of the shorter duration of extraction.