Related Clues:

• Alternate for butter
• Margarine kin
• Bottleneck
• Spread in a tub?
• It's often held at diners
• Nondairy stick
• Grocery stick
• Dairy bar
• You might stick a knife in it
• Pack to capacity
• Contents of a cool tub
• Pseudo butter
• Fat in a pat, maybe
• Toast-topping option
• Get stuck