[(E)]

The staple diet for the residents of the SALT facility is going to be extremely diverse, with most (non-processed) food available. It is going to be planned in advance though, with whoever is in charge of coordinating the crops having influence on what gets eaten in the following year(s). Hopefully the residents tastes coincide with the crop coordinators.

A huge range of fruit is likely, this will follow the trend of having a very, very wide range of food available. Being a fussy eater will be problematic when the production is diverse as it is at SALT. The main starch for a meal could be potatoes, sweet potatoes, Yams, a dozen different grains, several other root vegetables, the list goes on.

As for preserved food, canning is actually slightly tricky unless they have access to glass or metal. They produce plastics internally but those might not be suitable for canning techniques. (Anyone with more knowledge of biological based plastics is welcome to chip one here). Salt is also scarce.

That leaves the major techniques for food preservation to be old fashioned. Drying, candying and simply using foodstuffs with a long shelf life. The aforementioned rice and beans being among these, though sugar and dried fruit will likely feature highly as well. Freezedrying would be possible with a little work, though this would be a project undertaken after the end.
Most green leafy herbs are simple to grow under artificial light so they would be present.
As for other flavouring plants I would say that given that the population of SALT is made up mainly of plant experts there would be several hobbyist type operations growing whatever the GM fancies.

[EDIT]Vinegar will be simple, so pickles as well

I hope this is helpful.