First, this bird flu made our breakfast more expensive.

Now it is threatening summer itself.

Rita's Water Ice says it will stop selling frozen custard because of a national egg shortage. 

The chain will substitute soft serve instead. 

Though the price of eggs has risen significantly because of the outbreak.

Ariel Vegotsky, a spokesperson for the chain said Rita's egg vendor stopped production and Rita's simply couldn't find a supplier that could guarantee enough eggs.  

Vegotsky says Rita's sells about 4,500 gallons of custard every day -- that equates to about 1,600 pounds of egg yolks every day.

The company says it will begin selling frozen custard again as soon as it can find a sustainable supplier. 

Texas-based burger chain Whataburger shortened its breakfast hours in the face of the shortage, but resumed them in June after securing a steady egg supply.