There is no written rule that you cannot drink cappuccino after lunch but it is a habit that Italians have that they don’t break. One of the reasons that it is frowned upon to drink cappuccino at any other time of the day except for the morning is that this kind of coffee is quite heavy and is more of a calorie bomb with all the fat milk and sugar.
So when Sarah asks Carlo to make her a cappuccino and it’s past lunch time, the husband has difficulty finding words after such a request. The cherry on top is Sarah bringing coconut milk for him so he could make her coffee and then Carlo loses it, “Cappuccino with coconut milk? Already cappuccino after lunch is a freaking weird situation.”
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