Shortly after the acquisition, General Foods began test-marketing an expanded line of frozen foods, but the company quickly realized that a packaging process alone would not be sufficient to market frozen products in stores. To be sold, the packages had to be kept frozen while on display, so Birdseye engineers began development of a freezer cabinet designed specifically to hold frozen foods. The cabinet, which first appeared in 1934, required a great deal of space and electricity, which were not readily available in most grocery stores of the period. For those stores which could accommodate them, the payback was immediate. Housewives quickly realized that keeping packages of frozen food in the icebox could mean fresher meals and fewer trips to the market.