The phrase "a small shot of" is correct and usable in written English.
It can be used when referring to a small quantity of a liquid, often in the context of beverages or medicine.
Example: "I like to start my day with a small shot of espresso to boost my energy."
Alternatives: "a tiny amount of" or "a little dose of".
"And," he said, pausing as he overlaid that photograph with a small shot of the forty-eight-year-old Shandling in a recent issue of Entertainment Weekly.
The round shape could be irritating if you don't want it rolling away, and the small, but it could be worth keeping in your bag if you need just a small shot of charge.
My mother came downstairs from toasting in the Yuletide evening with a small shot of brandy (my mother never, ever, drinks so I knew something was up) to find me happily curled up, snoring gently, in the hairy basket.
But it's always possible that simplest is best; the distillers still swear by the trou gascon, Armagnac's heisting of the trou normand ritual done with Calvados, whereby, in the middle of a meal that may be turning into heavy lifting, one zips a small shot of Blanche, generally cold but occasionally room temp, to literally carve a hole through all that rich food.
If you do find that your willpower is waning, try a small shot of something sugary just to get you over the hump in an emergency.
Also, I thought a small shot of PSL syrup in the bottom of a champagne flute would act a little like Chambord in prosecco: class it up a little, give it the overall effect of a sort of syrupy craft ale.
Get a small shot glass and fill about ¾ of it with absinthe.
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On the Democratic side, Bernie Sanders still has a small mathematical shot of beating Clinton, but her inherent name recognition and establishment backing largely prevailed, as she is currently about 276 pledged delegates ahead of the Vermont senator.
Mrs Cornish's genteel nature was, on occasion, interrupted by "a volley of small shot", and Miss Johnson's proclivity toward "vulgarity of expression and a coarseness of manner" apparently suffered no shortage of admirers.
