To recognize a favorable shoe for card counting in blackjack, you need to track the ratio of high cards (10s, face cards, and aces) to low cards (2-6) remaining in the deck. Using a counting system like Hi-Lo, you assign values to cards and keep a running count as they are dealt. A positive running count suggests more low cards are left, which benefits the player. To refine your count, you calculate the true count by dividing the running count by the number of decks remaining, with a true count of +2 or higher typically indicating a favorable situation. The deeper you are into the shoe, the more accurate your count becomes. When the true count is positive, you should increase your bet, as the odds are in your favor, and when the count is low or negative, you should bet the minimum, as the odds favor the dealer.