Keto Core Max : You can add ice to it or even make it with equal proportions of plain soda and water. Green tea and a simple glass of chilled cold water can also come very handy. BOOM's Radhika Bajaj spoke to Zarna Shah, dietician and nutritionist about the good, the bad and the ugly of following the Ketogenic diet. Watch the episode of Fact File to know all the good, the bad and the ugly about the Keto diet.