Of course you must have real whipped cream with your Thanksgiving Pie.
Beakers work great; no corners to trap stuff.
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Fill it halfway with good heavy cream and a scoop of sugar, and whup it up with an immersion blender. Get the air right, about 1.75:1 loft.(We had Chicken Piccata with mashed potatoes, way better than turkey and easier too. Pecan pie for me, pumpkin yuk for Mo.)