A spouted pouch (100) has a pouch (105) and a spout (110) and holds a viscous product (115), formed from a flexible pouch material (120). The spouted pouch includes a first (125) and second end (130), with a gusset (135) being disposed at the second end of the pouch. The spout is disposed at the first end of the pouch and has a sealboat that extends into the pouch according to a length of the sealboat and forming a seal that seals the viscous product within the spouted pouch. A stability of the spouted pouch is a function of the length of the sealboat extension into the pouch, a depth of the gusset, dimensions of the sealboat, and a width of the pouch, such that the spouted pouch is stable both standing in a downside-up orientation in which the gusset contacts a support surface and standing in an upside-down orientation in which the sealboat contacts the support surface.
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