It sounds like whey.  Evidently your block was insufficiently strained before being pressed into the mold. 

Liquid Pockets in Cream Cheese
Okay, the following situation came up in a recent game of Pathfinder. Pretend the following are in a straight line, in a standard 5' grid with their bases touching each other.

player's summoned creature with 10' reach -> enemy minion-> enemy boss -> player

The only creature with extra reach in this scenario is the summoned creature. Does it threaten the enemy boss (who is 10' away) and provide flanking for the player?

The rules state "You threaten all squares into which you can make a melee attack", which led my group to think it did indeed threaten the enemy boss. However, we're unclear on if the enemy minion between the boss and summoned creature provides cover, and if so, how that might impact threatened squares.
