n firstly, crush the digestive biscuits in a plastic bag, using a rolling pinnn melt the butter in the microwavenn add the crushed biscuits to the butter and mix very wellnn line an 8"round tin with aluminium foil at the basenn transfer the biscuit and butter mixture into the tinnn spread and press it down it evenly using a glassnn place this in the fridge for 1 hrnn for the filling:nn warm the cream cheese in the microwave slightly (if it has been in the fridge)nn now mix a small quantity of condensed milk with the cheese and make it lump free using a wired whisknn add the rest of the condensed milk and mix well to form a lump-free mixturenn add lemon zest and lemon juice. mix well. you can taste it at this point to check if the sweetness or sourness from the lemons needs to be adjustednn place the tin in the fridge again for an hour or more if its not set. i allowed it to set for 2 hrsnn then decorate with the zest of the other lemon (optional), pomegranate seeds or blueberries if you wishnn serve chillednn  n