Ketonomy Keto Hi Rachael, This recipe will last for several days in the fridge, however, the longer it sits, the softer the cucumber will get. Thanks for the recipe for our new favorite summer salad. Yes, you can make creamy cucumber dill salad recipe ahead of time – in fact, you should! Ketonomy Keto Reviews Most people calling their diet a keto diet are simply following a low or very low carbohydrate diet. Low carbohydrate diets can be helpful, at least in the short term, for some people to lose weight.