Ok, options:
1) Devaluation: It has been done in the past, but the political price to pay is high. It does not affect so much the majority of the population, since most of us do not buy IPads, but it means less of a lot of other things to buy, and a dolarization of the economy (nobody is going to lower the price of his house in USD).
2) Prices control: It has been done before, and for some products it really works (bread, milk, that kind). Problem is that I do not believe that direct control policies can work in the long run, better to use indirect ones, meaning -->
3) Increase of competition: we know who are those that create inflation, they are in charge of companies in oligopoly positions, in certain markets such as basic food items and others, and they do it not only for short term gains, also for long-term gains through political influence. Clarin is an example (controls media, paper, cable and other things). We need a really good law against monopolies and oligopolies and we need to implement it.
4) Increase of productivity: we have the educated population, we have how to feed them, we need to beat Europe in their own game. We can do culture, high tech, services, cheaper and better. We need to invest lots in public education, especially technical. Anyway, the First World tends to turn protectionist when the tide is against it.
5) My "utopian" solution: More cooperatives instead of capitalist companies: this would increase competition and decrease prices in two ways, said competition (since coops are smaller than its capiatlist cunterpart and there would be more space in a market for more of them) and less costs since the parasitic element is not there anymore (the owner, less control mechanisms such as middle managers are needed, etc, it is called the "X cost" in cooperative studies). The way to do this is a social bank (also a coop) that invest in probably profitable coop ventures. Once the initial investment by the government is done, the wheel will move alone.
5) Or simply demand will decrease and then we will face depression (with less inflation or even delfation) or stagflation.
By the way, some things that people complain about are not real local problems. The price of a cup of coffe in Thailand in a local, not on the street (a cheap country for almost anything else) is almost the same than in Argentina AND in Spain, (and even in a lot of coffe shops in PARIS). Something similar happens with fuel, depending on subsidies etc, so it is not an Argentinian problem, but a global thing. Even when you find a coffe in Thailand for 1/2 the price than in PARIS,this is still very expensive, since food or some services cost 4 to 8 times less in Thailand.