bulk out
phr. v..phr. v.. to make something bigger or thicker by adding more of something else to it.
phr. v.. to increase the volume, mass, or substance of something by adding supplementary material, often of lower quality or cost.
You can bulk out the soup by adding some extra potatoes.
The author had to bulk out the final chapter with extra descriptions to meet the publisher's word count.
Food manufacturers often bulk out processed meats with cereal fillers to reduce production costs while maintaining the appearance of a full portion.
usually used with food, text, or physical objects where volume is increased by adding fillers.
connect this to the noun 'bulk' (large size); it often carries a slight negative nuance of adding 'filler' rather than high-quality content.
I bulked out it with water.I bulked it out with water.when using a pronoun like 'it', it must go between the verb and the particle 'out'.