I used a two weeks old avocado to make avocado ranch dressing and it was delicious! When stored correctly, avocados can actually last three weeks to a month. This homemade recipe was Silky Criss Cross Back Trumpet Gown The Dress Shop of Edmore ZARA WHITE BLACK ABSTRACT GEO PRINT LONG BALLOON SLEEVE MIDI DRESS SIZE XS 8 10 eBay Store bought dressing will last two to three months after opening if properly stored. The acidic vinegar based versions last longer than ones containing dairy. Simple Chiffon Backless Deep V Neck Black Long Prom Dress PG559 US12 Black