The present invention relates to a seasoning-filling method in which a bottle (30) including a mouth (31) and a bottle body (32) is filled with a seasoning (43). First, an inert gas (42) is substituted for an internal atmosphere of the bottle body (32) by supplying only the inert gas (42) from the mouth (31) to an internal space of the bottle body (32). Then, the bottle body (32) is filled with the seasoning (43) from the mouth (31). The inert gas (42) introduced into the bottle body (32) beforehand generates bubbles (43a) with the inert gas (42) accommodated therein, in the seasoning 43 introduced into the bottle body (32). (Fig. 1)
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