In this study, dispersive liquid–liquid microextraction based on the solidification of a floating organic drop (DLLME-SFO) was investigated for allura red (AR) preconcentration from water and food samples using green deep eutectic solvent (DES) as a disperser solvent. Compared to the conventional disperser solvents, the DES, which consists of choline chloride and citric acid (1:1), exhibited a higher AR recovery with simple preparation, being eco-friendly and low expense. The proposed protocol showed relatively high recovery values of AR in real samples (97.0–99.5 %). The optimum conditions for AR extraction were pH=3.0, 250.0 µl DES volume, CTAB (4.0 × 10−4 mol L−1), KCl (0.10 mol L−1), 100 µl of 1-dodecanol, and centrifugation: 4.0 min. at 4000 rpm. The validated method showed linearity from 100 to 5000 µg L−1 with 14.4 enrichment factor for 10.0 mL sample. The limit of detection was 29.9 µg L−1 and the relative standard deviation was 3.7 % for five replicate analysis of 300.0 µg L−1. The AR content in studied food samples was determined by spectrophotometry and high-performance liquid chromatography (HPLC). Our proposed method is simple and fast, as the whole process for AR extraction requires only 9.0 min. The analytical eco-scale AGREEnness calculator (AGREE), the blue applicability grade index (BAGI), and the ChlorTox scale were evaluated.