Ingredient Profile
- Scientific name
- Hibiscus sabdariffa, family Malvaceae
- Active compounds
- Anthocyanins, Citric & Hibiscic acids
- Origin
- West Africa / Sudan
- Top producer
- Sudan, Egypt, Nigeria, Mexico
- Saudi culinary use
- Cold Ramadan brew (Hejaz), herbal tea
- Key benefit
- Anti-hypertensive & high Vitamin C
- Preparation
- Cold steep (8 hours) or hot brew (10 mins)
What Is Hibiscus (Karkade)?
Hibiscus tea is made from the dried, trumpet-shaped calyces of the Roselle plant. After the flower petals fall off, the calyces enlarge into fleshy, bright red cups that protect the seeds. These are harvested and dried to create the ruby-red "leaves" found in Saudi spice markets. While thousands of hibiscus species exist, only Hibiscus sabdariffa is used for this specific tea.
In Saudi Arabia, particularly in the Hejaz region, cold Karkade is a quintessential Ramadan drink. It is served chilled at Iftar for its refreshing acidity and its reputation as a "thirst-quencher" that hydrates better than plain water due to its mineral content.
Hibiscus Science — Blood Pressure & Heart
Meta-analyses of human trials show that hibiscus tea can lower systolic blood pressure by an average of 7.5 mmHg. It is thought to work similarly to ACE inhibitors, helping blood vessels relax.
The deep red color comes from anthocyanins, the same class of antioxidants found in blueberries. These compounds help reduce oxidative stress and inflammation in the cardiovascular system.
Preliminary research suggests that hibiscus extract may help prevent fatty liver and support weight management by reducing the absorption of dietary fats and carbohydrates.
Hibiscus acts as a mild natural diuretic and may help the kidneys flush out excess uric acid, potentially providing benefit for those prone to kidney stones or gout.
While hot brewing is faster, cold steeping hibiscus (soaking the calyces in cold water for 8–12 hours) preserves more of the delicate Vitamin C and produces a clearer, less bitter drink. This is the preferred method for the high-quality Sudanese hibiscus often found in Saudi markets.
