On Tue, 11 Aug 2020 13:04:44 -0700 (PDT), Cindy Hamilton
> wrote:

>On Tuesday, August 11, 2020 at 3:42:06 PM UTC-4, U.S. Janet B. wrote:
>> or On Tue, 11 Aug 2020 12:09:01 -0700 (PDT),
>> wrote:
>>
>> >Also Janet at the end, please say 'serving' instead of 'service', next time.
>>
>> I was thinking in terms of preparing and offering the food to diners.
>> (Like the food is ready and setting on the table for family dining.)
>> Are you thinking of the amount given to each individual or the
>> physical act of dishing out food, or how many portions in the entire
>> recipe?
>> I believe that I have seen my way used but would appreciate
>> clarification from someone.
>>
>> Janet US
>
>It's a trifle British (or 19th Century), but a perfectly understandable idiom.

I'd have thought/guessed that 'serving' refers more to a home context
and 'service' more to a professional/hospitality context.