Pressurizable fluid container apparatus

A bottle cap assembly comprising:

• a cap comprising;
• a top surface and a bottom surface,
• a shaft guide, and
• a relief housing on the bottom surface of the cap;
• and
• a plunger disposed through the shaft guide;
• a conduit, wherein one end of the conduit is in fluid communication with the relief housing;
• an uptake adapter with a top end fitted into the relief housing and a bottom end, the uptake adapter having an intake hole disposed within an indentation;
• and
• a relief tube extension with a top end and a bottom end, the top end being fitted over the bottom end of the uptake adapter, wherein the relief tube extension can be moved by sliding it up or down along the uptake adapter and can cover all or part of the indentation, thereby determining how much air is allowed to pass through the intake hole.