The Prophet ﷺ never criticized any food (he was invited to) but he used to eat if he liked the food, and leave it if he disliked it.  

مَا عَابَ النَّبِيُّ ﷺ طَعَامًا قَطُّ إِنِ اشْتَهَاهُ أَكَلَهُ وَإِنْ كَرِهَهُ تَرَكَهُ  

We have nothing with us but vinegar. He asked for it, he began to eat it, and then said: Vinegar is a good condiment, vinegar is a good condiment.  

أَنَّ النَّبِيَّ ﷺ سَأَلَ أَهْلَهُ الأُدُمَ فَقَالُوا مَا عِنْدَنَا إِلاَّ خَلٌّ فَدَعَا بِهِ فَجَعَلَ يَأْكُلُ بِهِ وَيَقُولُ نِعْمَ الأُدُمُ الْخَلُّ نِعْمَ الأُدُمُ الْخَلُّ