The subjunctive is rarely used in colloquial English. Totally irrelevant information, but... it is a relic from Latin, where there are many uses for a subjunctive. There is even a special conditional using the subjunctive mood that expresses the exact circumstances you described, which is usually called future less vivid.
In English and other languages, there are different verb moods, these moods indicate if the information is a fact, a command, a request, etc. In the case of subjunctive mood refers to a set of grammatical forms that allow people to express some situation is not real this includes wishes, possibilities, opinions, emotions and other situations that are not likely to happen or have not happen yet, this is the case of some modal verbs such as will, can, could or might used to express possibilities, wishes that are not considered as real and that are unlikely to come true. Although, the subjunctive mood includes many other grammatical forms. Thus, the mood that is used to express a wish or similar situations that are unlikely to come true is the subjunctive mood.
Explanation: ingenuity: Ingenuity is the ability to think creatively about a situation or to solve problems in a clever way. If you want to build a boat out of toothpicks and yarn, you’ll need a lot of ingenuity.
It normally means charm or enjoyment or in the case of food something used to add flavor (usually refers to lemon zest or orange zest which comes from shaving the peel off of the fruit)
