Obvious or no?

Were announcing our pregnancy to about 20 family members this weekend. At family gatherings like this I always bring a dish to pass whether it's a side dish, appetizer, etc. I was thinking of trying to be the last ones to arrive and walk in and say "I have this new snack I found that I've been absolutely obsessed with the past few weeks and I want everyone here to try it." Then pull out pickles and ice cream. If you were there, would you know immediately that it was a pregnancy announcement? I want it to be obvious for people to know right away. Is there a more "typical pregnancy craving" I should use instead?