Explanation
In Italy, offering food is a fundamental expression of hospitality and affection, especially when meeting family. Refusing it can be perceived as rejecting the host's generosity and warmth, potentially causing offense. It is customary to at least taste the food offered, even if you are not hungry.
Local Tip
Always accept a small portion and compliment the host; if you must decline, offer a sincere compliment and a plausible excuse like 'I just ate, but it looks wonderful.'
How it compares elsewhere
Refusing food is generally polite to avoid imposing, but it can be seen as rejecting hospitality; a polite refusal with explanation is acceptable.
Refusing food, especially in a family setting, is often considered disrespectful as it implies rejection of the host's care and generosity.
While it is polite to accept, a gracious refusal with compliments is acceptable in formal settings, but in family contexts, it may still be seen as slightly impolite.