It was the same with me. t for teaspoon and T for tablesoon.
When we lived in northern Illinois there was a talk-show host who had a cooking segment, on which he hosted local chefs. As they gave the ingredients, he'd repeat them, saying:
One big T such & such. One little t so and so.
The more modern usage is tsp and tbls. But as long as people understand, it doesn't make much difference.
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