Traditionally, agar was obtained exclusively from Japanese red algae harvested from great ocean depths. After proper drying ...

Thus organisms capable of lactose fermentation such as Escherichia coli, form bright pinky-red colonies (plate pictured on the left here). MacConkey agar is commonly used to differentiate between the ...

If they used agar agar, which sets at room temperature ... They were incredibly brightly coloured, with layers of garish green, red, yellow and white. I played around with this “new to me ...