"Food on time, but needs improvement"

First time trying tingkat. Food was ok, soups are flavourful, but on at least 2 occasions, the egg had egg shells in them. Last day of tingkat, the taste of stir fry vegetables does seem a bit of sour-ish/spoilt, seems not very fresh. The caterer ... More can improve on dish combinations, if all the dishes same colour, do you think Singapore, a country with rich food culture will appreciate it?
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