We tested four different green food dyes, including pandan powder, matcha, spinach powder, and spirulina powder. To determine which natural dye had the best flavor and color, we ran three tests ...

Nutritionist Robyn Flipse's warning to consumers isn't about green food coloring. Rather, she says, "Should any of these items be consumed in excess, the bigger concern is the calories." ...

Household bleach reacts with a solution of green food coloring to first oxidize the yellow component of the dye, leaving only the blue coloring. Eventually, the blue dye is also oxidized, and the ...