Spinach
5.0Softer, reduce cook time slightly
Juiced or blended into a green drink, chard contributes about 0.3g fiber per ounce and a deep iron-mineral note that needs apple or pineapple to balance. The oxalic acid binds calcium in the glass — drink within 10 minutes or grit settles at the bottom. Substitutes here are judged on suspension stability and on flavor profile when raw and unheated. Bitter greens read harsh in a smoothie; mild ones disappear into the sweetness without contributing the trademark green-mineral character.
Softer, reduce cook time slightly
Spinach is the standard green-smoothie chard swap — milder mineral note, suspends well in liquid for about 15 minutes before settling. Use baby leaves; mature stems bind the blender blade and leave fiber bits floating. Pair with banana or pineapple to balance the residual oxalic chalkiness on the back palate.