Historical clue formulations

• Purple smoothie add-in — 2026-03-29
• Juice bar ingredient — 2021-08-06
• Food item rich in antioxidants — 2018-03-15
• Brazilian fruit export — 2015-07-21
• "Superfood" used in smoothies — 2014-12-07
• Trendy "superfood" — 2013-08-15